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Functions
ExtractSurface2DCFS.cpp File Reference
#include <cstdio>
#include <cstdlib>
#include <iomanip>
#include <iostream>
#include <string>
#include <MultiRegions/AssemblyMap/AssemblyMapDG.h>
#include <MultiRegions/ExpList2DHomogeneous1D.h>
#include <MultiRegions/ExpList3DHomogeneous1D.h>
#include <MultiRegions/ExpList3DHomogeneous2D.h>
#include <LocalRegions/Expansion2D.h>
#include <LocalRegions/MatrixKey.h>
#include <MultiRegions/DisContField.h>
#include <LibUtilities/BasicUtils/ErrorUtil.hpp>
#include <LibUtilities/BasicUtils/FieldIO.h>
#include <LibUtilities/BasicUtils/NekFactory.hpp>
#include <LibUtilities/BasicUtils/SessionReader.h>
#include <LibUtilities/BasicUtils/SharedArray.hpp>
#include <LibUtilities/Memory/NekMemoryManager.hpp>
#include <MultiRegions/ContField.h>
#include <SpatialDomains/MeshGraph.h>
#include <SolverUtils/SolverUtilsDeclspec.h>
#include <boost/program_options.hpp>

Go to the source code of this file.

Functions

int main (int argc, char *argv[])
 

Function Documentation

◆ main()

int main ( int  argc,
char *  argv[] 
)

Evaluation of the velocity gradient in the cartesian directions Du_x: traceFieldsAdded[10] Du_y: traceFieldsAdded[11] Dv_x: traceFieldsAdded[12] Dv_y: traceFieldsAdded[13]

Definition at line 70 of file ExtractSurface2DCFS.cpp.

71{
72 string fname;
73 po::options_description desc("Available options");
74 desc.add_options()("help,h", "Produce this help message.");
75
76 po::options_description hidden("Hidden options");
77 hidden.add_options()("input-file", po::value<vector<string>>(),
78 "input filename");
79
80 po::options_description cmdline_options;
81 cmdline_options.add(desc).add(hidden);
82
83 po::options_description visible("Allowed options");
84 visible.add(desc);
85
86 po::positional_options_description p;
87 p.add("input-file", -1);
88
89 po::variables_map vm;
90
91 try
92 {
93 po::store(po::command_line_parser(argc, argv)
94 .options(cmdline_options)
95 .positional(p)
96 .run(),
97 vm);
98 po::notify(vm);
99 }
100 catch (const std::exception &e)
101 {
102 cerr << e.what() << endl;
103 cerr << desc;
104 return 1;
105 }
106
107 std::vector<std::string> filenames;
108 if (vm.count("input-file"))
109 {
110 filenames = vm["input-file"].as<std::vector<std::string>>();
111 }
112
113 if (vm.count("help") || vm.count("input-file") != 1)
114 {
115 cerr << "Description: Extracts a surface from a 2D .fld file created "
116 "by the CompressibleFlowSolver and places it into a .cfs file"
117 << endl;
118 cerr << "Usage: ExtractSurface2DCFS [options] meshFile fieldFile"
119 << endl;
120 cout << desc;
121 return 1;
122 }
123
124 LibUtilities::SessionReaderSharedPtr vSession =
125 LibUtilities::SessionReader::CreateInstance(argc, argv);
126 SpatialDomains::MeshGraphSharedPtr graphShPt =
127 SpatialDomains::MeshGraph::Read(vSession);
128
129 fname = vSession->GetSessionName() + ".cfs";
130
131 // Find .fld or .chk file name
132 std::string fieldFile;
133 for (auto &file : filenames)
134 {
135 if (file.size() > 4 && (file.substr(file.size() - 4, 4) == ".fld" ||
136 file.substr(file.size() - 4, 4) == ".chk"))
137 {
138 fieldFile = file;
139 break;
140 }
141 }
142
143 int cnt;
144 int id1 = 0;
145 int id2 = 0;
146 int i, j, n, e, b;
147 Array<OneD, NekDouble> auxArray;
148
149 int nBndEdgePts, nBndEdges, nBndRegions;
150
151 std::string m_ViscosityType;
152 NekDouble m_gamma;
153 NekDouble m_pInf;
154 NekDouble m_rhoInf;
155 NekDouble m_uInf;
156 NekDouble m_vInf;
157 NekDouble m_wInf;
158 NekDouble m_gasConstant;
159 NekDouble m_Twall;
160 NekDouble m_mu;
161
162 int m_spacedim = 2;
163 int nDimensions = m_spacedim;
164 int phys_offset;
165
166 // Get gamma parameter from session file.
167 ASSERTL0(vSession->DefinesParameter("Gamma"),
168 "Compressible flow sessions must define a Gamma parameter.");
169 vSession->LoadParameter("Gamma", m_gamma, 1.4);
170
171 // Get E0 parameter from session file.
172 ASSERTL0(vSession->DefinesParameter("pInf"),
173 "Compressible flow sessions must define a pInf parameter.");
174 vSession->LoadParameter("pInf", m_pInf, 101325);
175
176 // Get rhoInf parameter from session file.
177 ASSERTL0(vSession->DefinesParameter("rhoInf"),
178 "Compressible flow sessions must define a rhoInf parameter.");
179 vSession->LoadParameter("rhoInf", m_rhoInf, 1.225);
180
181 // Get uInf parameter from session file.
182 ASSERTL0(vSession->DefinesParameter("uInf"),
183 "Compressible flow sessions must define a uInf parameter.");
184 vSession->LoadParameter("uInf", m_uInf, 0.1);
185
186 // Get vInf parameter from session file.
187 if (m_spacedim == 2 || m_spacedim == 3)
188 {
189 ASSERTL0(vSession->DefinesParameter("vInf"),
190 "Compressible flow sessions must define a vInf parameter"
191 "for 2D/3D problems.");
192 vSession->LoadParameter("vInf", m_vInf, 0.0);
193 }
194
195 // Get wInf parameter from session file.
196 if (m_spacedim == 3)
197 {
198 ASSERTL0(vSession->DefinesParameter("wInf"),
199 "Compressible flow sessions must define a wInf parameter"
200 "for 3D problems.");
201 vSession->LoadParameter("wInf", m_wInf, 0.0);
202 }
203
204 vSession->LoadParameter("GasConstant", m_gasConstant, 287.058);
205 vSession->LoadParameter("Twall", m_Twall, 300.15);
206 vSession->LoadSolverInfo("ViscosityType", m_ViscosityType, "Constant");
207 vSession->LoadParameter("mu", m_mu, 1.78e-05);
208
209 //--------------------------------------------------------------------------
210 // Import field file
211 vector<LibUtilities::FieldDefinitionsSharedPtr> fieldDef;
212 vector<vector<NekDouble>> fieldData;
213
214 LibUtilities::FieldMetaDataMap fieldMetaDataMap;
215 LibUtilities::Import(fieldFile, fieldDef, fieldData, fieldMetaDataMap);
216 //--------------------------------------------------------------------------
217
218 //--------------------------------------------------------------------------
219 // Set up Expansion information
220 vector<vector<LibUtilities::PointsType>> pointsType;
221 for (i = 0; i < fieldDef.size(); ++i)
222 {
223 vector<LibUtilities::PointsType> ptype;
224 for (j = 0; j < 2; ++j)
225 {
226 ptype.push_back(LibUtilities::ePolyEvenlySpaced);
227 }
228 pointsType.push_back(ptype);
229 }
230 graphShPt->SetExpansionInfo(fieldDef, pointsType);
231
232 //--------------------------------------------------------------------------
233
234 //--------------------------------------------------------------------------
235 // Define Expansion
236 int nfields = vSession->GetVariables().size();
237 Array<OneD, MultiRegions::ExpListSharedPtr> Exp(nfields);
238 Array<OneD, MultiRegions::ExpListSharedPtr> pFields(nfields);
239
240 for (i = 0; i < pFields.size(); i++)
241 {
242 pFields[i] =
243 MemoryManager<MultiRegions::DisContField>::AllocateSharedPtr(
244 vSession, graphShPt, vSession->GetVariable(i));
245 }
246
247 MultiRegions::ExpListSharedPtr Exp2D;
248 Exp2D = MemoryManager<MultiRegions::ExpList>::AllocateSharedPtr(vSession,
249 graphShPt);
250
251 Exp[0] = Exp2D;
252
253 for (i = 1; i < nfields; ++i)
254 {
255 Exp[i] =
256 MemoryManager<MultiRegions::ExpList>::AllocateSharedPtr(*Exp2D);
257 }
258
259 int nSolutionPts = pFields[0]->GetNpoints();
260 int nTracePts = pFields[0]->GetTrace()->GetTotPoints();
261 int nElements = pFields[0]->GetExpSize();
262
263 Array<OneD, NekDouble> tmp(nSolutionPts, 0.0);
264
265 Array<OneD, NekDouble> x(nSolutionPts);
266 Array<OneD, NekDouble> y(nSolutionPts);
267 Array<OneD, NekDouble> z(nSolutionPts);
268
269 Array<OneD, NekDouble> traceX(nTracePts);
270 Array<OneD, NekDouble> traceY(nTracePts);
271 Array<OneD, NekDouble> traceZ(nTracePts);
272
273 Array<OneD, NekDouble> surfaceX(nTracePts);
274 Array<OneD, NekDouble> surfaceY(nTracePts);
275 Array<OneD, NekDouble> surfaceZ(nTracePts);
276
277 pFields[0]->GetCoords(x, y, z);
278
279 pFields[0]->ExtractTracePhys(x, traceX);
280 pFields[0]->ExtractTracePhys(y, traceY);
281 pFields[0]->ExtractTracePhys(z, traceZ);
282 //--------------------------------------------------------------------------
283
284 //--------------------------------------------------------------------------
285 // Copy data from field file
286 Array<OneD, Array<OneD, NekDouble>> uFields(nfields);
287 Array<OneD, Array<OneD, NekDouble>> traceFields(nfields);
288 Array<OneD, Array<OneD, NekDouble>> surfaceFields(nfields);
289
290 // Extract the physical values of the solution at the boundaries
291 for (j = 0; j < nfields; ++j)
292 {
293 uFields[j] = Array<OneD, NekDouble>(nSolutionPts, 0.0);
294 traceFields[j] = Array<OneD, NekDouble>(nTracePts, 0.0);
295 surfaceFields[j] = Array<OneD, NekDouble>(nTracePts, 0.0);
296
297 for (i = 0; i < fieldData.size(); ++i)
298 {
299 Exp[j]->ExtractDataToCoeffs(fieldDef[i], fieldData[i],
300 fieldDef[i]->m_fields[j],
301 Exp[j]->UpdateCoeffs());
302 }
303 Exp[j]->BwdTrans(Exp[j]->GetCoeffs(), Exp[j]->UpdatePhys());
304 Vmath::Vcopy(nSolutionPts, Exp[j]->GetPhys(), 1, uFields[j], 1);
305 pFields[0]->ExtractTracePhys(uFields[j], traceFields[j]);
306 }
307
308 // Fields to add in the output file
309
310 int nfieldsAdded = 20;
311 Array<OneD, Array<OneD, NekDouble>> traceFieldsAdded(nfieldsAdded);
312 Array<OneD, Array<OneD, NekDouble>> surfaceFieldsAdded(nfieldsAdded);
313
314 for (j = 0; j < nfieldsAdded; ++j)
315 {
316 traceFieldsAdded[j] = Array<OneD, NekDouble>(nTracePts, 0.0);
317 surfaceFieldsAdded[j] = Array<OneD, NekDouble>(nTracePts, 0.0);
318 }
319
320 /******** Evaluation of normals and tangents on the trace *****************
321 * nx -> traceFieldsAdded[0];
322 * ny -> traceFieldsAdded[1];
323 * tx -> traceFieldsAdded[2];
324 * ty -> traceFieldsAdded[3];
325 ***************************************************************************/
326
327 Array<OneD, Array<OneD, NekDouble>> m_traceNormals(nDimensions);
328 for (i = 0; i < nDimensions; ++i)
329 {
330 m_traceNormals[i] = Array<OneD, NekDouble>(nTracePts, 0.0);
331 }
332 pFields[0]->GetTrace()->GetNormals(m_traceNormals);
333
334 Array<OneD, Array<OneD, NekDouble>> m_traceTangents(nDimensions);
335 for (i = 0; i < nDimensions; ++i)
336 {
337 m_traceTangents[i] = Array<OneD, NekDouble>(nTracePts, 0.0);
338 }
339
340 // nx
341 Vmath::Vcopy(nTracePts, &m_traceNormals[0][0], 1, &traceFieldsAdded[0][0],
342 1);
343
344 // ny
345 Vmath::Vcopy(nTracePts, &m_traceNormals[1][0], 1, &traceFieldsAdded[1][0],
346 1);
347
348 // t_x = - n_y
349 Vmath::Vcopy(nTracePts, &m_traceNormals[1][0], 1, &m_traceTangents[0][0],
350 1);
351 Vmath::Neg(nTracePts, &m_traceTangents[0][0], 1);
352
353 Vmath::Vcopy(nTracePts, &m_traceTangents[0][0], 1, &traceFieldsAdded[2][0],
354 1);
355
356 // t_y = n_x
357 Vmath::Vcopy(nTracePts, &m_traceNormals[0][0], 1, &m_traceTangents[1][0],
358 1);
359
360 Vmath::Vcopy(nTracePts, &m_traceTangents[1][0], 1, &traceFieldsAdded[3][0],
361 1);
362
363 /******** Evaluation of the pressure ***************************************
364 * P = (E-1/2.*rho.*((rhou./rho).^2+(rhov./rho).^2))*(gamma - 1);
365 * P -> traceFieldsAdded[4];
366 ***************************************************************************/
367
368 Array<OneD, NekDouble> pressure(nSolutionPts, 0.0);
369 NekDouble gammaMinusOne = m_gamma - 1.0;
370
371 for (i = 0; i < m_spacedim; i++)
372 {
373 Vmath::Vmul(nSolutionPts, &uFields[i + 1][0], 1, &uFields[i + 1][0], 1,
374 &tmp[0], 1);
375
376 Vmath::Smul(nSolutionPts, 0.5, &tmp[0], 1, &tmp[0], 1);
377
378 Vmath::Vadd(nSolutionPts, &pressure[0], 1, &tmp[0], 1, &pressure[0], 1);
379 }
380
381 Vmath::Vdiv(nSolutionPts, &pressure[0], 1, &uFields[0][0], 1, &pressure[0],
382 1);
383
384 Vmath::Vsub(nSolutionPts, &uFields[nfields - 1][0], 1, &pressure[0], 1,
385 &pressure[0], 1);
386
387 Vmath::Smul(nSolutionPts, gammaMinusOne, &pressure[0], 1, &pressure[0], 1);
388
389 // Extract trace
390 pFields[0]->ExtractTracePhys(pressure, traceFieldsAdded[4]);
391
392 /******** Evaluation of the temperature ************************************
393 * T = P/(R*rho);
394 * T -> traceFieldsAdded[5];
395 ***************************************************************************/
396
397 Array<OneD, NekDouble> temperature(nSolutionPts, 0.0);
398
399 Vmath::Vdiv(nSolutionPts, &pressure[0], 1, &uFields[0][0], 1,
400 &temperature[0], 1);
401
402 NekDouble GasConstantInv = 1.0 / m_gasConstant;
403 Vmath::Smul(nSolutionPts, GasConstantInv, &temperature[0], 1,
404 &temperature[0], 1);
405
406 // Extract trace
407 pFields[0]->ExtractTracePhys(temperature, traceFieldsAdded[5]);
408
409 /*** Evaluation of the temperature gradient in the normal direction ********
410 * DT_n -> traceFieldsAdded[6]
411 ***************************************************************************/
412
413 Array<OneD, Array<OneD, NekDouble>> Dtemperature(nDimensions);
414 Array<OneD, Array<OneD, NekDouble>> traceDtemperature(nDimensions);
415
416 for (i = 0; i < nDimensions; ++i)
417 {
418 Dtemperature[i] = Array<OneD, NekDouble>(nSolutionPts, 0.0);
419 traceDtemperature[i] = Array<OneD, NekDouble>(nTracePts, 0.0);
420 }
421
422 for (i = 0; i < nDimensions; ++i)
423 {
424 for (n = 0; n < nElements; n++)
425 {
426 phys_offset = pFields[0]->GetPhys_Offset(n);
427
428 pFields[i]->GetExp(n)->PhysDeriv(i, temperature + phys_offset,
429 auxArray =
430 Dtemperature[i] + phys_offset);
431 }
432 // Extract trace
433 pFields[0]->ExtractTracePhys(Dtemperature[i], traceDtemperature[i]);
434 }
435
436 for (i = 0; i < nDimensions; ++i)
437 {
438 Vmath::Vmul(nTracePts, &m_traceNormals[i][0], 1,
439 &traceDtemperature[i][0], 1, &tmp[0], 1);
440
441 Vmath::Vadd(nTracePts, &traceFieldsAdded[6][0], 1, &tmp[0], 1,
442 &traceFieldsAdded[6][0], 1);
443 }
444
445 /*** Evaluation of the pressure gradient ***********************************
446 * DP_t -> traceFieldsAdded[7] tangent direction
447 * DP_x -> traceFieldsAdded[8]
448 * DP_y -> traceFieldsAdded[9]
449 ***************************************************************************/
450
451 Array<OneD, Array<OneD, NekDouble>> Dpressure(nDimensions);
452 Array<OneD, Array<OneD, NekDouble>> traceDpressure(nDimensions);
453
454 for (i = 0; i < nDimensions; ++i)
455 {
456 Dpressure[i] = Array<OneD, NekDouble>(nSolutionPts, 0.0);
457 traceDpressure[i] = Array<OneD, NekDouble>(nTracePts, 0.0);
458 }
459
460 for (i = 0; i < nDimensions; ++i)
461 {
462 for (n = 0; n < nElements; n++)
463 {
464 phys_offset = pFields[0]->GetPhys_Offset(n);
465
466 pFields[i]->GetExp(n)->PhysDeriv(i, pressure + phys_offset,
467 auxArray =
468 Dpressure[i] + phys_offset);
469 }
470 // Extract trace
471 pFields[0]->ExtractTracePhys(Dpressure[i], traceDpressure[i]);
472 }
473
474 // Dp_t
475 for (i = 0; i < nDimensions; ++i)
476 {
477 Vmath::Vmul(nTracePts, &m_traceTangents[i][0], 1, &traceDpressure[i][0],
478 1, &tmp[0], 1);
479
480 Vmath::Vadd(nTracePts, &traceFieldsAdded[7][0], 1, &tmp[0], 1,
481 &traceFieldsAdded[7][0], 1);
482 }
483
484 // Dp_x
485 Vmath::Vcopy(nTracePts, &traceDpressure[0][0], 1, &traceFieldsAdded[8][0],
486 1);
487
488 // Dp_y
489 Vmath::Vcopy(nTracePts, &traceDpressure[1][0], 1, &traceFieldsAdded[9][0],
490 1);
491
492 /** Evaluation of the velocity gradient in the cartesian directions
493 * Du_x: traceFieldsAdded[10]
494 * Du_y: traceFieldsAdded[11]
495 * Dv_x: traceFieldsAdded[12]
496 * Dv_y: traceFieldsAdded[13]
497 **/
498 Array<OneD, Array<OneD, Array<OneD, NekDouble>>> Dvelocity(nDimensions);
499 Array<OneD, Array<OneD, Array<OneD, NekDouble>>> traceDvelocity(
500 nDimensions);
501 Array<OneD, Array<OneD, NekDouble>> velocity(nDimensions);
502
503 for (i = 0; i < nDimensions; ++i)
504 {
505 Dvelocity[i] = Array<OneD, Array<OneD, NekDouble>>(nDimensions);
506 traceDvelocity[i] = Array<OneD, Array<OneD, NekDouble>>(nDimensions);
507 velocity[i] = Array<OneD, NekDouble>(nSolutionPts, 0.0);
508
509 Vmath::Vdiv(nSolutionPts, uFields[i + 1], 1, uFields[0], 1, velocity[i],
510 1);
511
512 for (j = 0; j < nDimensions; ++j)
513 {
514 Dvelocity[i][j] = Array<OneD, NekDouble>(nSolutionPts, 0.0);
515 traceDvelocity[i][j] = Array<OneD, NekDouble>(nTracePts, 0.0);
516 }
517 }
518
519 for (i = 0; i < nDimensions; ++i)
520 {
521 for (j = 0; j < nDimensions; ++j)
522 {
523 for (n = 0; n < nElements; n++)
524 {
525 phys_offset = pFields[0]->GetPhys_Offset(n);
526
527 pFields[i]->GetExp(n)->PhysDeriv(j, velocity[i] + phys_offset,
528 auxArray = Dvelocity[i][j] +
529 phys_offset);
530 }
531
532 // Extract trace
533 pFields[0]->ExtractTracePhys(Dvelocity[i][j], traceDvelocity[i][j]);
534 }
535 }
536
537 Vmath::Vcopy(nTracePts, &traceDvelocity[0][0][0], 1,
538 &traceFieldsAdded[10][0], 1);
539 Vmath::Vcopy(nTracePts, &traceDvelocity[0][1][0], 1,
540 &traceFieldsAdded[11][0], 1);
541 Vmath::Vcopy(nTracePts, &traceDvelocity[1][0][0], 1,
542 &traceFieldsAdded[12][0], 1);
543 Vmath::Vcopy(nTracePts, &traceDvelocity[1][1][0], 1,
544 &traceFieldsAdded[13][0], 1);
545
546 /*** Evaluation of shear stresses ******************************************
547 * tau_xx -> traceFieldsAdded[14]
548 * tau_yy -> traceFieldsAdded[15]
549 * tau_xy -> traceFieldsAdded[16]
550 ***************************************************************************/
551
552 // Stokes hypotesis
553 const NekDouble lambda = -2.0 / 3.0;
554
555 // Auxiliary variables
556 Array<OneD, NekDouble> mu(nSolutionPts, 0.0);
557 Array<OneD, NekDouble> mu2(nSolutionPts, 0.0);
558 Array<OneD, NekDouble> divVel(nSolutionPts, 0.0);
559
560 // Variable viscosity through the Sutherland's law
561 if (m_ViscosityType == "Variable")
562 {
563 NekDouble mu_star = m_mu;
564 NekDouble T_star = m_pInf / (m_rhoInf * m_gasConstant);
565 NekDouble ratio;
566
567 for (int i = 0; i < nSolutionPts; ++i)
568 {
569 ratio = temperature[i] / T_star;
570 mu[i] = mu_star * ratio * sqrt(ratio) * (T_star + 110.0) /
571 (temperature[i] + 110.0);
572 }
573 }
574 else
575 {
576 Vmath::Fill(nSolutionPts, m_mu, &mu[0], 1);
577 }
578
579 // Computing diagonal terms of viscous stress tensor
580 Array<OneD, Array<OneD, NekDouble>> temp(m_spacedim);
581 Array<OneD, Array<OneD, NekDouble>> Sgg(m_spacedim);
582
583 // mu2 = 2 * mu
584 Vmath::Smul(nSolutionPts, 2.0, &mu[0], 1, &mu2[0], 1);
585
586 // Velocity divergence
587 Vmath::Vadd(nSolutionPts, &divVel[0], 1, &Dvelocity[0][0][0], 1, &divVel[0],
588 1);
589 Vmath::Vadd(nSolutionPts, &divVel[0], 1, &Dvelocity[1][1][0], 1, &divVel[0],
590 1);
591
592 // Velocity divergence scaled by lambda * mu
593 Vmath::Smul(nSolutionPts, lambda, &divVel[0], 1, &divVel[0], 1);
594 Vmath::Vmul(nSolutionPts, &mu[0], 1, &divVel[0], 1, &divVel[0], 1);
595
596 // Diagonal terms of viscous stress tensor (Sxx, Syy)
597 // Sjj = 2 * mu * du_j/dx_j - (2 / 3) * mu * sum_j(du_j/dx_j)
598 for (j = 0; j < m_spacedim; ++j)
599 {
600 temp[j] = Array<OneD, NekDouble>(nSolutionPts, 0.0);
601 Sgg[j] = Array<OneD, NekDouble>(nSolutionPts, 0.0);
602
603 Vmath::Vmul(nSolutionPts, &mu2[0], 1, &Dvelocity[j][j][0], 1,
604 &temp[j][0], 1);
605
606 Vmath::Vadd(nSolutionPts, &temp[j][0], 1, &divVel[0], 1, &Sgg[j][0], 1);
607 }
608
609 // Extra diagonal terms of viscous stress tensor (Sxy = Syx)
610 Array<OneD, NekDouble> Sxy(nSolutionPts, 0.0);
611
612 // Sxy = (du/dy + dv/dx)
613 Vmath::Vadd(nSolutionPts, &Dvelocity[0][1][0], 1, &Dvelocity[1][0][0], 1,
614 &Sxy[0], 1);
615
616 // Sxy = mu * (du/dy + dv/dx)
617 Vmath::Vmul(nSolutionPts, &mu[0], 1, &Sxy[0], 1, &Sxy[0], 1);
618
619 pFields[0]->ExtractTracePhys(Sgg[0], traceFieldsAdded[14]);
620 pFields[0]->ExtractTracePhys(Sgg[1], traceFieldsAdded[15]);
621 pFields[0]->ExtractTracePhys(Sxy, traceFieldsAdded[16]);
622
623 /*** Evaluation of the shear stress in tangent direction *******************
624 * tau_t -> traceFieldsAdded[17]
625 ***************************************************************************/
626 Array<OneD, NekDouble> sigma_diff(nTracePts, 0.0);
627 Array<OneD, NekDouble> cosTeta(nTracePts, 0.0);
628 Array<OneD, NekDouble> sinTeta(nTracePts, 0.0);
629 Array<OneD, NekDouble> cos2Teta(nTracePts, 0.0);
630 Array<OneD, NekDouble> sin2Teta(nTracePts, 0.0);
631 Array<OneD, NekDouble> tau_t(nTracePts, 0.0);
632
633 Array<OneD, NekDouble> tmpTeta(nTracePts, 0.0);
634
635 // cos(teta) = nx
636 Vmath::Vcopy(nTracePts, &m_traceNormals[0][0], 1, &cosTeta[0], 1);
637
638 // sin(teta) = ny
639 Vmath::Vcopy(nTracePts, &m_traceNormals[1][0], 1, &sinTeta[0], 1);
640
641 // sigma_diff = sigma_x - sigma_y
642 Vmath::Vsub(nTracePts, &traceFieldsAdded[14][0], 1,
643 &traceFieldsAdded[15][0], 1, &sigma_diff[0], 1);
644
645 // sin(2*teta)
646 Vmath::Vmul(nTracePts, &cosTeta[0], 1, &sinTeta[0], 1, &tmpTeta[0], 1);
647 Vmath::Smul(nTracePts, 2.0, &tmpTeta[0], 1, &sin2Teta[0], 1);
648
649 // cos(2*teta)
650 Vmath::Vmul(nTracePts, &cosTeta[0], 1, &cosTeta[0], 1, &cos2Teta[0], 1);
651 Vmath::Vmul(nTracePts, &sinTeta[0], 1, &sinTeta[0], 1, &tmpTeta[0], 1);
652 Vmath::Vsub(nTracePts, &cos2Teta[0], 1, &tmpTeta[0], 1, &cos2Teta[0], 1);
653
654 // tau_t = -0.5*sigma_diff * sin(2*teta) + tau_xy * cos(2*teta)
655 Vmath::Smul(nTracePts, -0.5, &sigma_diff[0], 1, &sigma_diff[0], 1);
656 Vmath::Vmul(nTracePts, &sigma_diff[0], 1, &sin2Teta[0], 1, &tau_t[0], 1);
657 Vmath::Vmul(nTracePts, &traceFieldsAdded[16][0], 1, &cos2Teta[0], 1,
658 &tmpTeta[0], 1);
659 Vmath::Vadd(nTracePts, &tau_t[0], 1, &tmpTeta[0], 1, &tau_t[0], 1);
660
661 Vmath::Vcopy(nTracePts, &tau_t[0], 1, &traceFieldsAdded[17][0], 1);
662
663 /*** Evaluation of dinamic viscosity ***************************************
664 * mu -> traceFieldsAdded[18]
665 ***************************************************************************/
666
667 pFields[0]->ExtractTracePhys(mu, traceFieldsAdded[18]);
668
669 /*** Evaluation of Mach number *********************************************
670 * M -> traceFieldsAdded[18]
671 ***************************************************************************/
672 NekDouble gamma = m_gamma;
673
674 // Speed of sound
675 Array<OneD, NekDouble> soundspeed(nSolutionPts, 0.0);
676
677 Vmath::Vdiv(nSolutionPts, pressure, 1, uFields[0], 1, soundspeed, 1);
678 Vmath::Smul(nSolutionPts, gamma, soundspeed, 1, soundspeed, 1);
679 Vmath::Vsqrt(nSolutionPts, soundspeed, 1, soundspeed, 1);
680
681 // Mach
682 Array<OneD, NekDouble> mach(nSolutionPts, 0.0);
683
684 for (int i = 0; i < m_spacedim; ++i)
685 {
686 Vmath::Vvtvp(nSolutionPts, uFields[i + 1], 1, uFields[i + 1], 1, mach,
687 1, mach, 1);
688 }
689
690 Vmath::Vdiv(nSolutionPts, mach, 1, uFields[0], 1, mach, 1);
691 Vmath::Vdiv(nSolutionPts, mach, 1, uFields[0], 1, mach, 1);
692 Vmath::Vsqrt(nSolutionPts, mach, 1, mach, 1);
693 Vmath::Vdiv(nSolutionPts, mach, 1, soundspeed, 1, mach, 1);
694
695 pFields[0]->ExtractTracePhys(mach, traceFieldsAdded[19]);
696
697 /**************************************************************************/
698 // Extract coordinates
699
700 if (pFields[0]->GetBndCondExpansions().size())
701 {
702 id1 = 0;
703 cnt = 0;
704 nBndRegions = pFields[0]->GetBndCondExpansions().size();
705 for (b = 0; b < nBndRegions; ++b)
706 {
707 nBndEdges = pFields[0]->GetBndCondExpansions()[b]->GetExpSize();
708 for (e = 0; e < nBndEdges; ++e)
709 {
710 nBndEdgePts = pFields[0]
711 ->GetBndCondExpansions()[b]
712 ->GetExp(e)
713 ->GetNumPoints(0);
714
715 id2 = pFields[0]->GetTrace()->GetPhys_Offset(
716 pFields[0]->GetTraceMap()->GetBndCondIDToGlobalTraceID(
717 cnt++));
718
719 if (pFields[0]->GetBndConditions()[b]->GetUserDefined() ==
720 "WallViscous" ||
721 pFields[0]->GetBndConditions()[b]->GetUserDefined() ==
722 "WallAdiabatic" ||
723 pFields[0]->GetBndConditions()[b]->GetUserDefined() ==
724 "Wall")
725 {
726 Vmath::Vcopy(nBndEdgePts, &traceX[id2], 1, &surfaceX[id1],
727 1);
728
729 Vmath::Vcopy(nBndEdgePts, &traceY[id2], 1, &surfaceY[id1],
730 1);
731
732 Vmath::Vcopy(nBndEdgePts, &traceZ[id2], 1, &surfaceZ[id1],
733 1);
734
735 id1 += nBndEdgePts;
736 }
737 }
738 }
739 }
740
741 // Extract fields
742 if (pFields[0]->GetBndCondExpansions().size())
743 {
744 for (j = 0; j < nfields; ++j)
745 {
746 id1 = 0;
747 cnt = 0;
748 nBndRegions = pFields[j]->GetBndCondExpansions().size();
749 for (b = 0; b < nBndRegions; ++b)
750 {
751 nBndEdges = pFields[j]->GetBndCondExpansions()[b]->GetExpSize();
752 for (e = 0; e < nBndEdges; ++e)
753 {
754 nBndEdgePts = pFields[j]
755 ->GetBndCondExpansions()[b]
756 ->GetExp(e)
757 ->GetNumPoints(0);
758
759 id2 = pFields[j]->GetTrace()->GetPhys_Offset(
760 pFields[j]->GetTraceMap()->GetBndCondIDToGlobalTraceID(
761 cnt++));
762
763 if (pFields[j]->GetBndConditions()[b]->GetUserDefined() ==
764 "WallViscous" ||
765 pFields[j]->GetBndConditions()[b]->GetUserDefined() ==
766 "WallAdiabatic" ||
767 pFields[j]->GetBndConditions()[b]->GetUserDefined() ==
768 "Wall")
769 {
770 Vmath::Vcopy(nBndEdgePts, &traceFields[j][id2], 1,
771 &surfaceFields[j][id1], 1);
772
773 id1 += nBndEdgePts;
774 }
775 }
776 }
777 }
778 }
779
780 // Extract fields added
781 if (pFields[0]->GetBndCondExpansions().size())
782 {
783 for (j = 0; j < nfieldsAdded; ++j)
784 {
785 id1 = 0;
786 cnt = 0;
787 nBndRegions = pFields[0]->GetBndCondExpansions().size();
788 for (b = 0; b < nBndRegions; ++b)
789 {
790 nBndEdges = pFields[0]->GetBndCondExpansions()[b]->GetExpSize();
791 for (e = 0; e < nBndEdges; ++e)
792 {
793 nBndEdgePts = pFields[0]
794 ->GetBndCondExpansions()[b]
795 ->GetExp(e)
796 ->GetNumPoints(0);
797
798 id2 = pFields[0]->GetTrace()->GetPhys_Offset(
799 pFields[0]->GetTraceMap()->GetBndCondIDToGlobalTraceID(
800 cnt++));
801
802 if (pFields[0]->GetBndConditions()[b]->GetUserDefined() ==
803 "WallViscous" ||
804 pFields[0]->GetBndConditions()[b]->GetUserDefined() ==
805 "WallAdiabatic" ||
806 pFields[0]->GetBndConditions()[b]->GetUserDefined() ==
807 "Wall")
808 {
809 Vmath::Vcopy(nBndEdgePts, &traceFieldsAdded[j][id2], 1,
810 &surfaceFieldsAdded[j][id1], 1);
811
812 id1 += nBndEdgePts;
813 }
814 }
815 }
816 }
817 }
818 //===================================================================================================
819 //===================================================================================================
820 //===================================================================================================
821 std::string vEquation = vSession->GetSolverInfo("EQType");
822
823 Array<OneD, MultiRegions::ExpListSharedPtr> BndExp;
824 BndExp = pFields[0]->GetBndCondExpansions();
825 StdRegions::StdExpansion1DSharedPtr bc;
826
827 NekDouble Fxp(0.0);
828 NekDouble Fyp(0.0);
829 NekDouble Fxv(0.0);
830 NekDouble Fyv(0.0);
831 NekDouble Sref(0.0);
832
833 int GlobalIndex(0);
834
835 for (int i = 0; i < BndExp[0]->GetExpSize(); ++i)
836 {
837 bc = BndExp[0]->GetExp(i)->as<LocalRegions::Expansion1D>();
838
839 int nbc = bc->GetTotPoints();
840
841 Array<OneD, NekDouble> nxOnBnd(nbc, 0.0);
842 Array<OneD, NekDouble> nyOnBnd(nbc, 0.0);
843 Array<OneD, NekDouble> txOnBnd(nbc, 0.0);
844 Array<OneD, NekDouble> tyOnBnd(nbc, 0.0);
845 // Array<OneD, NekDouble> CoeffAero(nbc,0.0);
846 // Array<OneD, NekDouble> tmp(nbc,0.0);
847
848 Array<OneD, NekDouble> drag_p(nbc, 0.0);
849 Array<OneD, NekDouble> lift_p(nbc, 0.0);
850 Array<OneD, NekDouble> PressurOnBnd(nbc, 0.0);
851
852 Array<OneD, NekDouble> drag_v(nbc, 0.0);
853 Array<OneD, NekDouble> lift_v(nbc, 0.0);
854 Array<OneD, NekDouble> ShearStressOnBnd(nbc, 0.0);
855
856 Array<OneD, NekDouble> Unity(nbc, 1.0);
857
858 for (int j = 0; j < nbc; ++j)
859 {
860
861 nxOnBnd[j] = surfaceFieldsAdded[0][GlobalIndex];
862 nyOnBnd[j] = surfaceFieldsAdded[1][GlobalIndex];
863 txOnBnd[j] = surfaceFieldsAdded[2][GlobalIndex];
864 tyOnBnd[j] = surfaceFieldsAdded[3][GlobalIndex];
865
866 PressurOnBnd[j] = surfaceFieldsAdded[4][GlobalIndex];
867
868 if (vEquation == "NavierStokesCFE")
869 {
870 ShearStressOnBnd[j] = surfaceFieldsAdded[17][GlobalIndex];
871 }
872
873 // CoeffAero[j] = surfaceFields[0][GlobalIndex];
874 // tmp[j] =
875 // surfaceFields[1][GlobalIndex]*surfaceFields[1][GlobalIndex];
876 // tmp[j] = tmp[j] +
877 // surfaceFields[2][GlobalIndex]*surfaceFields[2][GlobalIndex];
878 // tmp[j] = sqrt(tmp[j]);
879 // CoeffAero[j] = CoeffAero[j]*tmp[j];
880 // CoeffAero[j] = 1.0/CoeffAero[j];
881 //
882 // PressurOnBnd[j] =
883 // CoeffAero[j]*surfaceFieldsAdded[4][GlobalIndex];
884 //
885 // cout << "CoeffAero = " << CoeffAero[j] << endl;
886
887 GlobalIndex++;
888 }
889
890 Vmath::Vmul(nbc, PressurOnBnd, 1, nxOnBnd, 1, drag_p, 1);
891 Vmath::Vmul(nbc, PressurOnBnd, 1, nyOnBnd, 1, lift_p, 1);
892
893 // Vmath::Vmul(nbc,drag_p,1,CoeffAero,1, drag_p,1);
894 // Vmath::Vmul(nbc,lift_p,1,CoeffAero,1, lift_p,1);
895
896 Fxp += bc->Integral(drag_p);
897 Fyp += bc->Integral(lift_p);
898
899 if (vEquation == "NavierStokesCFE")
900 {
901 Vmath::Vmul(nbc, ShearStressOnBnd, 1, txOnBnd, 1, drag_v, 1);
902 Vmath::Vmul(nbc, ShearStressOnBnd, 1, tyOnBnd, 1, lift_v, 1);
903
904 // Vmath::Vdiv(nbc,drag_v,1,CoeffAero,1, drag_v,1);
905 // Vmath::Vdiv(nbc,lift_v,1,CoeffAero,1, lift_v,1);
906
907 Fxv += bc->Integral(drag_v);
908 Fyv += bc->Integral(lift_v);
909 }
910
911 Sref += bc->Integral(Unity);
912 }
913
914 cout << "\n Sref = " << Sref << endl;
915 Fxp = Fxp / Sref;
916 Fyp = Fyp / Sref;
917 Fxv = Fxv / Sref;
918 Fyv = Fyv / Sref;
919 cout << " Pressure drag (Fxp) = " << Fxp << endl;
920 cout << " Pressure lift (Fyp) = " << Fyp << endl;
921 cout << " Viscous drag (Fxv) = " << Fxv << endl;
922 cout << " Viscous lift (Fyv) = " << Fyv << endl;
923 cout << "\n ==> Total drag = " << Fxp + Fxv << endl;
924 cout << " ==> Total lift = " << Fyp + Fyv << "\n" << endl;
925
926 //===================================================================================================
927 //===================================================================================================
928 //===================================================================================================
929
930 // Print the surface coordinates and the surface solution in a .txt file
931 ofstream outfile;
932 outfile.open(fname.c_str());
933 outfile << "% x[m] "
934 << " \t"
935 << "y[m] "
936 << " \t"
937 << "z[m] "
938 << " \t"
939 << "nx[] "
940 << " \t"
941 << "ny[] "
942 << " \t"
943 << "tx[] "
944 << " \t"
945 << "ty[] "
946 << " \t"
947 << "rho[kg/m^3] "
948 << " \t"
949 << "rhou[kg/(m^2 s)] "
950 << " \t"
951 << "rhov[kg/(m^2 s)] "
952 << " \t"
953 << "E[Pa] "
954 << " \t"
955 << "p[Pa] "
956 << " \t"
957 << "T[k] "
958 << " \t"
959 << "dT/dn[k/m] "
960 << " \t"
961 << "dp/dT[Pa/m] "
962 << " \t"
963 << "dp/dx[Pa/m] "
964 << " \t"
965 << "dp/dy[Pa/m] "
966 << " \t"
967 << "du/dx[s^-1] "
968 << " \t"
969 << "du/dy[s^-1] "
970 << " \t"
971 << "dv/dx[s^-1] "
972 << " \t"
973 << "dv/dy[s^-1] "
974 << " \t"
975 << "tau_xx[Pa] "
976 << " \t"
977 << "tau_yy[Pa] "
978 << " \t"
979 << "tau_xy[Pa] "
980 << " \t"
981 << "tau_t[Pa] "
982 << " \t"
983 << "mu[Pa s] "
984 << " \t"
985 << "M[] "
986 << " \t"
987 // << "Fxp " << " \t"
988 << endl;
989 for (i = 0; i < id1; ++i)
990 {
991 outfile << scientific << setw(17) << setprecision(16) << surfaceX[i]
992 << " \t " << surfaceY[i] << " \t " << surfaceZ[i] << " \t "
993 << surfaceFieldsAdded[0][i] << " \t "
994 << surfaceFieldsAdded[1][i] << " \t "
995 << surfaceFieldsAdded[2][i] << " \t "
996 << surfaceFieldsAdded[3][i] << " \t " << surfaceFields[0][i]
997 << " \t " << surfaceFields[1][i] << " \t "
998 << surfaceFields[2][i] << " \t " << surfaceFields[3][i]
999 << " \t " << surfaceFieldsAdded[4][i] << " \t "
1000 << surfaceFieldsAdded[5][i] << " \t "
1001 << surfaceFieldsAdded[6][i] << " \t "
1002 << surfaceFieldsAdded[7][i] << " \t "
1003 << surfaceFieldsAdded[8][i] << " \t "
1004 << surfaceFieldsAdded[9][i] << " \t "
1005 << surfaceFieldsAdded[10][i] << " \t "
1006 << surfaceFieldsAdded[11][i] << " \t "
1007 << surfaceFieldsAdded[12][i] << " \t "
1008 << surfaceFieldsAdded[13][i] << " \t "
1009 << surfaceFieldsAdded[14][i] << " \t "
1010 << surfaceFieldsAdded[15][i] << " \t "
1011 << surfaceFieldsAdded[16][i] << " \t "
1012 << surfaceFieldsAdded[17][i] << " \t "
1013 << surfaceFieldsAdded[18][i] << " \t "
1014 << surfaceFieldsAdded[19][i]
1015 << " \t "
1016 // << Fxp << " \t "
1017 << endl;
1018 }
1019 outfile << endl << endl;
1020 outfile.close();
1021
1022 return 0;
1023}
m_mu
NekDouble m_mu
Definition: CompressibleBL.cpp:81
m_Twall
NekDouble m_Twall
Definition: CompressibleBL.cpp:73
m_rhoInf
NekDouble m_rhoInf
Definition: CompressibleBL.cpp:78
m_vInf
NekDouble m_vInf
Definition: CompressibleBL.cpp:80
m_uInf
NekDouble m_uInf
Definition: CompressibleBL.cpp:77
ASSERTL0
#define ASSERTL0(condition, msg)
Definition: ErrorUtil.hpp:208
Nektar::MemoryManager
General purpose memory allocation routines with the ability to allocate from thread specific memory p...
Definition: NekMemoryManager.hpp:81
Nektar::StdRegions::StdExpansion::GetTotPoints
int GetTotPoints() const
This function returns the total number of quadrature points used in the element.
Definition: StdExpansion.h:134
CG_Iterations.pressure
pressure
Definition: CG_Iterations.py:229
CellMLToNektar.cellml_metadata.p
p
Definition: cellml_metadata.py:350
Nektar::LibUtilities::Import
void Import(const std::string &infilename, std::vector< FieldDefinitionsSharedPtr > &fielddefs, std::vector< std::vector< NekDouble > > &fielddata, FieldMetaDataMap &fieldinfomap, const Array< OneD, int > &ElementIDs)
This function allows for data to be imported from an FLD file when a session and/or communicator is n...
Definition: FieldIO.cpp:288
Nektar::LibUtilities::FieldMetaDataMap
std::map< std::string, std::string > FieldMetaDataMap
Definition: FieldIO.h:50
Nektar::LibUtilities::SessionReaderSharedPtr
std::shared_ptr< SessionReader > SessionReaderSharedPtr
Definition: SessionReader.h:113
Nektar::LibUtilities::ePolyEvenlySpaced
@ ePolyEvenlySpaced
1D Evenly-spaced points using Lagrange polynomial
Definition: PointsType.h:73
Nektar::MovementTests::velocity
const std::vector< NekDouble > velocity
Definition: TestMovement.cpp:57
Nektar::MultiRegions::ExpListSharedPtr
std::shared_ptr< ExpList > ExpListSharedPtr
Shared pointer to an ExpList object.
Definition: LocTraceToTraceMap.h:56
Nektar::SpatialDomains::MeshGraphSharedPtr
std::shared_ptr< MeshGraph > MeshGraphSharedPtr
Definition: MeshGraph.h:174
Nektar::StdRegions::StdExpansion1DSharedPtr
std::shared_ptr< StdExpansion1D > StdExpansion1DSharedPtr
Definition: StdExpansion1D.h:111
Nektar::UnitTests::z
std::vector< double > z(NPUPPER)
Nektar::NekDouble
double NekDouble
Definition: NektarUnivTypeDefs.hpp:43
Vmath::Vsqrt
void Vsqrt(int n, const T *x, const int incx, T *y, const int incy)
sqrt y = sqrt(x)
Definition: Vmath.hpp:340
Vmath::Vmul
void Vmul(int n, const T *x, const int incx, const T *y, const int incy, T *z, const int incz)
Multiply vector z = x*y.
Definition: Vmath.hpp:72
Vmath::Neg
void Neg(int n, T *x, const int incx)
Negate x = -x.
Definition: Vmath.hpp:292
Vmath::Vvtvp
void Vvtvp(int n, const T *w, const int incw, const T *x, const int incx, const T *y, const int incy, T *z, const int incz)
vvtvp (vector times vector plus vector): z = w*x + y
Definition: Vmath.hpp:366
Vmath::Vadd
void Vadd(int n, const T *x, const int incx, const T *y, const int incy, T *z, const int incz)
Add vector z = x+y.
Definition: Vmath.hpp:180
Vmath::Smul
void Smul(int n, const T alpha, const T *x, const int incx, T *y, const int incy)
Scalar multiply y = alpha*x.
Definition: Vmath.hpp:100
Vmath::Vdiv
void Vdiv(int n, const T *x, const int incx, const T *y, const int incy, T *z, const int incz)
Multiply vector z = x/y.
Definition: Vmath.hpp:126
Vmath::Fill
void Fill(int n, const T alpha, T *x, const int incx)
Fill a vector with a constant value.
Definition: Vmath.hpp:54
Vmath::Vcopy
void Vcopy(int n, const T *x, const int incx, T *y, const int incy)
Definition: Vmath.hpp:825
Vmath::Vsub
void Vsub(int n, const T *x, const int incx, const T *y, const int incy, T *z, const int incz)
Subtract vector z = x-y.
Definition: Vmath.hpp:220
tinysimd::sqrt
scalarT< T > sqrt(scalarT< T > in)
Definition: scalar.hpp:294

References ASSERTL0, Nektar::LibUtilities::ePolyEvenlySpaced, Vmath::Fill(), Nektar::StdRegions::StdExpansion::GetTotPoints(), Nektar::LibUtilities::Import(), m_mu, m_rhoInf, m_Twall, m_uInf, m_vInf, Vmath::Neg(), CellMLToNektar.cellml_metadata::p, CG_Iterations::pressure, CellMLToNektar.translators::run(), Vmath::Smul(), tinysimd::sqrt(), Vmath::Vadd(), Vmath::Vcopy(), Vmath::Vdiv(), Nektar::MovementTests::velocity, Vmath::Vmul(), Vmath::Vsqrt(), Vmath::Vsub(), Vmath::Vvtvp(), and Nektar::UnitTests::z().

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