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Nektar::RinglebFlowBC Class Reference

Wall boundary conditions for compressible flow problems. More...

#include <RinglebFlowBC.h>

Inheritance diagram for Nektar::RinglebFlowBC:
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Collaboration diagram for Nektar::RinglebFlowBC:
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Static Public Member Functions

static CFSBndCondSharedPtr create (const LibUtilities::SessionReaderSharedPtr &pSession, const Array< OneD, MultiRegions::ExpListSharedPtr > &pFields, const Array< OneD, Array< OneD, NekDouble > > &pTraceNormals, const int pSpaceDim, const int bcRegion, const int cnt)
 Creates an instance of this class. More...
 

Static Public Attributes

static std::string className
 Name of the class. More...
 

Protected Member Functions

virtual void v_Apply (Array< OneD, Array< OneD, NekDouble > > &Fwd, Array< OneD, Array< OneD, NekDouble > > &physarray, const NekDouble &time)
 
- Protected Member Functions inherited from Nektar::CFSBndCond
 CFSBndCond (const LibUtilities::SessionReaderSharedPtr &pSession, const Array< OneD, MultiRegions::ExpListSharedPtr > &pFields, const Array< OneD, Array< OneD, NekDouble > > &pTraceNormals, const int pSpaceDim, const int bcRegion, const int cnt)
 Constructor. More...
 

Private Member Functions

 RinglebFlowBC (const LibUtilities::SessionReaderSharedPtr &pSession, const Array< OneD, MultiRegions::ExpListSharedPtr > &pFields, const Array< OneD, Array< OneD, NekDouble > > &pTraceNormals, const int pSpaceDim, const int bcRegion, const int cnt)
 
virtual ~RinglebFlowBC (void)
 

Private Attributes

int m_expdim
 
bool m_homo1D
 

Friends

class MemoryManager< RinglebFlowBC >
 

Additional Inherited Members

- Public Member Functions inherited from Nektar::CFSBndCond
virtual ~CFSBndCond ()
 
void Apply (Array< OneD, Array< OneD, NekDouble > > &Fwd, Array< OneD, Array< OneD, NekDouble > > &physarray, const NekDouble &time=0)
 Apply the boundary condition. More...
 
- Protected Attributes inherited from Nektar::CFSBndCond
LibUtilities::SessionReaderSharedPtr m_session
 Session reader. More...
 
Array< OneD,
MultiRegions::ExpListSharedPtr > 		m_fields
 Array of fields. More...
 
Array< OneD, Array< OneD,
NekDouble > > 		m_traceNormals
 Trace normals. More...
 
int m_spacedim
 Space dimension. More...
 
VariableConverterSharedPtr m_varConv
 Auxiliary object to convert variables. More...
 
NekDouble m_gamma
 Parameters of the flow. More...
 
NekDouble m_rhoInf
 
NekDouble m_pInf
 
Array< OneD, NekDouble > m_velInf
 
int m_bcRegion
 Id of the boundary region. More...
 
int m_offset
 Offset. More...
 

Detailed Description

Wall boundary conditions for compressible flow problems.

Definition at line 48 of file RinglebFlowBC.h.

Constructor & Destructor Documentation

Nektar::RinglebFlowBC::RinglebFlowBC ( const LibUtilities::SessionReaderSharedPtr &  pSession,
const Array< OneD, MultiRegions::ExpListSharedPtr > &  pFields,
const Array< OneD, Array< OneD, NekDouble > > &  pTraceNormals,
const int  pSpaceDim,
const int  bcRegion,
const int  cnt 
)
private

Definition at line 49 of file RinglebFlowBC.cpp.

References m_expdim, m_homo1D, and Nektar::CFSBndCond::m_session.

55  : CFSBndCond(pSession, pFields, pTraceNormals, pSpaceDim, bcRegion, cnt)
56 {
57  m_expdim = pFields[0]->GetGraph()->GetMeshDimension();
58 
59  m_homo1D = false;
60  if (m_session->DefinesSolverInfo("HOMOGENEOUS"))
61  {
62  std::string HomoStr = m_session->GetSolverInfo("HOMOGENEOUS");
63  if ((HomoStr == "HOMOGENEOUS1D") || (HomoStr == "Homogeneous1D")
64  || (HomoStr == "1D") || (HomoStr == "Homo1D"))
65  {
66  m_homo1D = true;
67  }
68  }
69 }
Nektar::CFSBndCond::CFSBndCond
CFSBndCond(const LibUtilities::SessionReaderSharedPtr &pSession, const Array< OneD, MultiRegions::ExpListSharedPtr > &pFields, const Array< OneD, Array< OneD, NekDouble > > &pTraceNormals, const int pSpaceDim, const int bcRegion, const int cnt)
Constructor.
Definition: CFSBndCond.cpp:51
Nektar::CFSBndCond::m_session
LibUtilities::SessionReaderSharedPtr m_session
Session reader.
Definition: CFSBndCond.h:84
virtual Nektar::RinglebFlowBC::~RinglebFlowBC ( void  )
inlineprivatevirtual

Definition at line 85 of file RinglebFlowBC.h.

85 {};

Member Function Documentation

static CFSBndCondSharedPtr Nektar::RinglebFlowBC::create ( const LibUtilities::SessionReaderSharedPtr &  pSession,
const Array< OneD, MultiRegions::ExpListSharedPtr > &  pFields,
const Array< OneD, Array< OneD, NekDouble > > &  pTraceNormals,
const int  pSpaceDim,
const int  bcRegion,
const int  cnt 
)
inlinestatic

Creates an instance of this class.

Definition at line 55 of file RinglebFlowBC.h.

References Nektar::MemoryManager< DataType >::AllocateSharedPtr(), and CellMLToNektar.cellml_metadata::p.

60  {
61  CFSBndCondSharedPtr p = MemoryManager<RinglebFlowBC>::
62  AllocateSharedPtr(pSession, pFields,
63  pTraceNormals, pSpaceDim, bcRegion, cnt);
64  return p;
65  }
Nektar::MemoryManager::AllocateSharedPtr
static boost::shared_ptr< DataType > AllocateSharedPtr()
Allocate a shared pointer from the memory pool.
Definition: NekMemoryManager.hpp:235
CellMLToNektar.cellml_metadata.p
tuple p
Definition: cellml_metadata.py:350
Nektar::CFSBndCondSharedPtr
boost::shared_ptr< CFSBndCond > CFSBndCondSharedPtr
A shared pointer to a boundary condition object.
Definition: CFSBndCond.h:49
void Nektar::RinglebFlowBC::v_Apply ( Array< OneD, Array< OneD, NekDouble > > &  Fwd,
Array< OneD, Array< OneD, NekDouble > > &  physarray,
const NekDouble &  time 
)
protectedvirtual

Implements Nektar::CFSBndCond.

Definition at line 71 of file RinglebFlowBC.cpp.

References Nektar::LibUtilities::eFunctionTypeFile, Nektar::CFSBndCond::m_bcRegion, m_expdim, Nektar::CFSBndCond::m_fields, Nektar::CFSBndCond::m_gamma, m_homo1D, Nektar::CFSBndCond::m_offset, Nektar::CFSBndCond::m_session, class_topology::P, and Vmath::Vcopy().

75 {
76  int nvariables = physarray.num_elements();
77 
78  // For 3DHomogenoeus1D
79  int n_planes = 1;
80  if (m_expdim == 2 && m_homo1D)
81  {
82  int nPointsTot = m_fields[0]->GetTotPoints();
83  int nPointsTot_plane = m_fields[0]->GetPlane(0)->GetTotPoints();
84  n_planes = nPointsTot/nPointsTot_plane;
85  }
86 
87  int id2, id2_plane, e_max;
88 
89  e_max = m_fields[0]->GetBndCondExpansions()[m_bcRegion]->GetExpSize();
90 
91  for(int e = 0; e < e_max; ++e)
92  {
93  int npoints = m_fields[0]->
94  GetBndCondExpansions()[m_bcRegion]->GetExp(e)->GetTotPoints();
95  int id1 = m_fields[0]->
96  GetBndCondExpansions()[m_bcRegion]->GetPhys_Offset(e);
97 
98  // For 3DHomogenoeus1D
99  if (m_expdim == 2 && m_homo1D)
100  {
101  int m_offset_plane = m_offset/n_planes;
102  int e_plane;
103  int e_max_plane = e_max/n_planes;
104  int nTracePts_plane = m_fields[0]->GetTrace()->GetNpoints();
105 
106  int planeID = floor((e + 0.5 )/ e_max_plane );
107  e_plane = e - e_max_plane*planeID;
108 
109  id2_plane = m_fields[0]->GetTrace()->GetPhys_Offset(
110  m_fields[0]->GetTraceMap()->
111  GetBndCondCoeffsToGlobalCoeffsMap(
112  m_offset_plane + e_plane));
113  id2 = id2_plane + planeID*nTracePts_plane;
114  }
115  else // For general case
116  {
117  id2 = m_fields[0]->
118  GetTrace()->GetPhys_Offset(m_fields[0]->GetTraceMap()->
119  GetBndCondTraceToGlobalTraceMap(m_offset+e));
120  }
121 
122  Array<OneD,NekDouble> x0(npoints, 0.0);
123  Array<OneD,NekDouble> x1(npoints, 0.0);
124  Array<OneD,NekDouble> x2(npoints, 0.0);
125 
126  m_fields[0]->GetBndCondExpansions()[m_bcRegion]->
127  GetExp(e)->GetCoords(x0, x1, x2);
128 
129  // Flow parameters
130  NekDouble c, k, phi, r, J, VV, pp, sint, P, ss;
131  NekDouble J11, J12, J21, J22, det;
132  NekDouble Fx, Fy;
133  NekDouble xi, yi;
134  NekDouble dV;
135  NekDouble dtheta;
136  NekDouble par1;
137  NekDouble theta = M_PI / 4.0;
138  NekDouble kExt = 0.7;
139  NekDouble V = kExt * sin(theta);
140  NekDouble toll = 1.0e-8;
141  NekDouble errV = 1.0;
142  NekDouble errTheta = 1.0;
143  NekDouble gamma = m_gamma;
144  NekDouble gamma_1_2 = (gamma - 1.0) / 2.0;
145 
146  // Loop on all the points of that edge
147  for (int j = 0; j < npoints; j++)
148  {
149 
150  while ((abs(errV) > toll) || (abs(errTheta) > toll))
151  {
152  VV = V * V;
153  sint = sin(theta);
154  c = sqrt(1.0 - gamma_1_2 * VV);
155  k = V / sint;
156  phi = 1.0 / k;
157  pp = phi * phi;
158  J = 1.0 / c + 1.0 / (3.0 * c * c * c) +
159  1.0 / (5.0 * c * c * c * c * c) -
160  0.5 * log((1.0 + c) / (1.0 - c));
161 
162  r = pow(c, 1.0 / gamma_1_2);
163  xi = 1.0 / (2.0 * r) * (1.0 / VV - 2.0 * pp) + J / 2.0;
164  yi = phi / (r * V) * sqrt(1.0 - VV * pp);
165  par1 = 25.0 - 5.0 * VV;
166  ss = sint * sint;
167 
168  Fx = xi - x0[j];
169  Fy = yi - x1[j];
170 
171  J11 = 39062.5 / pow(par1, 3.5) *
172  (1.0 / VV - 2.0 / VV * ss) * V + 1562.5 /
173  pow(par1, 2.5) * (-2.0 / (VV * V) + 4.0 /
174  (VV * V) * ss) + 12.5 / pow(par1, 1.5) * V +
175  312.5 / pow(par1, 2.5) * V + 7812.5 /
176  pow(par1, 3.5) * V - 0.25 *
177  (-1.0 / pow(par1, 0.5) * V / (1.0 - 0.2 *
178  pow(par1, 0.5)) - (1.0 + 0.2 * pow(par1, 0.5)) /
179  pow((1.0 - 0.2 * pow(par1, 0.5)), 2.0) /
180  pow(par1, 0.5) * V) / (1.0 + 0.2 * pow(par1, 0.5)) *
181  (1.0 - 0.2 * pow(par1, 0.5));
182 
183  J12 = -6250.0 / pow(par1, 2.5) / VV * sint * cos(theta);
184  J21 = -6250.0 / (VV * V) * sint / pow(par1, 2.5) *
185  pow((1.0 - ss), 0.5) + 78125.0 / V * sint /
186  pow(par1, 3.5) * pow((1.0 - ss), 0.5);
187 
188  // the matrix is singular when theta = pi/2
189  if (abs(x1[j]) < toll && abs(cos(theta)) < toll)
190  {
191  J22 = -39062.5 / pow(par1, 3.5) / V + 3125 /
192  pow(par1, 2.5) / (VV * V) + 12.5 /
193  pow(par1, 1.5) * V + 312.5 / pow(par1, 2.5) *
194  V + 7812.5 / pow(par1, 3.5) * V - 0.25 *
195  (-1.0 / pow(par1, 0.5) * V / (1.0 - 0.2 *
196  pow(par1, 0.5)) - (1.0 + 0.2 * pow(par1, 0.5)) /
197  pow((1.0 - 0.2 * pow(par1, 0.5)), 2.0) /
198  pow(par1, 0.5) * V) / (1.0 + 0.2 *
199  pow(par1, 0.5)) * (1.0 - 0.2 * pow(par1, 0.5));
200 
201  // dV = -dV/dx * Fx
202  dV = -1.0 / J22 * Fx;
203  dtheta = 0.0;
204  theta = M_PI / 2.0;
205  }
206  else
207  {
208  J22 = 3125.0 / VV * cos(theta) / pow(par1, 2.5) *
209  pow((1.0 - ss), 0.5) - 3125.0 / VV * ss /
210  pow(par1, 2.5) / pow((1.0 - ss), 0.5) *
211  cos(theta);
212 
213  det = -1.0 / (J11 * J22 - J12 * J21);
214 
215  // [dV dtheta]' = -[invJ]*[Fx Fy]'
216  dV = det * ( J22 * Fx - J12 * Fy);
217  dtheta = det * (-J21 * Fx + J11 * Fy);
218  }
219 
220  V = V + dV;
221  theta = theta + dtheta;
222 
223  errV = abs(dV);
224  errTheta = abs(dtheta);
225  }
226 
227  c = sqrt(1.0 - gamma_1_2 * VV);
228  int kk = id2 + j;
229  NekDouble timeramp = 200.0;;
230  if (time<timeramp &&
231  !(m_session->DefinesFunction("InitialConditions") &&
232  m_session->GetFunctionType("InitialConditions", 0) ==
233  LibUtilities::eFunctionTypeFile))
234  {
235  Fwd[0][kk] = pow(c, 1.0 / gamma_1_2) *
236  exp(-1.0 + time /timeramp);
237 
238  Fwd[1][kk] = Fwd[0][kk] * V * cos(theta) *
239  exp(-1 + time / timeramp);
240 
241  Fwd[2][kk] = Fwd[0][kk] * V * sin(theta) *
242  exp(-1 + time / timeramp);
243  }
244  else
245  {
246  Fwd[0][kk] = pow(c, 1.0 / gamma_1_2);
247  Fwd[1][kk] = Fwd[0][kk] * V * cos(theta);
248  Fwd[2][kk] = Fwd[0][kk] * V * sin(theta);
249  }
250 
251  P = (c * c) * Fwd[0][kk] / gamma;
252  Fwd[3][kk] = P / (gamma - 1.0) + 0.5 *
253  (Fwd[1][kk] * Fwd[1][kk] / Fwd[0][kk] +
254  Fwd[2][kk] * Fwd[2][kk] / Fwd[0][kk]);
255 
256  errV = 1.0;
257  errTheta = 1.0;
258  theta = M_PI / 4.0;
259  V = kExt * sin(theta);
260  }
261 
262  for (int i = 0; i < nvariables; ++i)
263  {
264  Vmath::Vcopy(npoints, &Fwd[i][id2], 1,
265  &(m_fields[i]->GetBndCondExpansions()[m_bcRegion]->
266  UpdatePhys())[id1],1);
267  }
268  }
269 }
Nektar::CFSBndCond::m_session
LibUtilities::SessionReaderSharedPtr m_session
Session reader.
Definition: CFSBndCond.h:84
Nektar::CFSBndCond::m_fields
Array< OneD, MultiRegions::ExpListSharedPtr > m_fields
Array of fields.
Definition: CFSBndCond.h:86
class_topology.P
P
Definition: class_topology.py:290
Nektar::NekDouble
double NekDouble
Definition: NektarUnivTypeDefs.hpp:44
Nektar::CFSBndCond::m_gamma
NekDouble m_gamma
Parameters of the flow.
Definition: CFSBndCond.h:95
Nektar::CFSBndCond::m_offset
int m_offset
Offset.
Definition: CFSBndCond.h:103
Vmath::Vcopy
void Vcopy(int n, const T *x, const int incx, T *y, const int incy)
Definition: Vmath.cpp:1061
Nektar::CFSBndCond::m_bcRegion
int m_bcRegion
Id of the boundary region.
Definition: CFSBndCond.h:101

Friends And Related Function Documentation

friend class MemoryManager< RinglebFlowBC >
friend

Definition at line 52 of file RinglebFlowBC.h.

Member Data Documentation

std::string Nektar::RinglebFlowBC::className
static
Initial value:
= GetCFSBndCondFactory().
RegisterCreatorFunction("RinglebFlow",
RinglebFlowBC::create,
"Ringleb flow boundary condition.")

Name of the class.

Definition at line 68 of file RinglebFlowBC.h.

int Nektar::RinglebFlowBC::m_expdim
private

Definition at line 85 of file RinglebFlowBC.h.

Referenced by RinglebFlowBC(), and v_Apply().

bool Nektar::RinglebFlowBC::m_homo1D
private

Definition at line 88 of file RinglebFlowBC.h.

Referenced by RinglebFlowBC(), and v_Apply().

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