36 #include "libmesh/quadrature.h"
41 template<
class Mu,
class SH,
class TC>
49 template<
class Mu,
class SH,
class TC>
55 template<
class Mu,
class SH,
class TC>
60 #ifdef GRINS_USE_GRVY_TIMERS
61 this->_timer->BeginTimer(
"LowMachNavierStokesVMSStabilization::element_time_derivative");
64 this->assemble_continuity_time_deriv( compute_jacobian, context );
65 this->assemble_momentum_time_deriv( compute_jacobian, context );
66 this->assemble_energy_time_deriv( compute_jacobian, context );
68 #ifdef GRINS_USE_GRVY_TIMERS
69 this->_timer->EndTimer(
"LowMachNavierStokesVMSStabilization::element_time_derivative");
74 template<
class Mu,
class SH,
class TC>
79 #ifdef GRINS_USE_GRVY_TIMERS
80 this->_timer->BeginTimer(
"LowMachNavierStokesVMSStabilization::mass_residual");
83 this->assemble_continuity_mass_residual( compute_jacobian, context );
84 this->assemble_momentum_mass_residual( compute_jacobian, context );
85 this->assemble_energy_mass_residual( compute_jacobian, context );
87 #ifdef GRINS_USE_GRVY_TIMERS
88 this->_timer->EndTimer(
"LowMachNavierStokesVMSStabilization::mass_residual");
93 template<
class Mu,
class SH,
class TC>
98 const unsigned int n_p_dofs = context.get_dof_indices(this->_press_var.p()).size();
101 const std::vector<libMesh::Real> &JxW =
102 context.get_element_fe(this->_flow_vars.u())->get_JxW();
105 const std::vector<std::vector<libMesh::RealGradient> >& p_dphi =
106 context.get_element_fe(this->_press_var.p())->get_dphi();
108 libMesh::DenseSubVector<libMesh::Number> &Fp = context.get_elem_residual(this->_press_var.p());
110 unsigned int n_qpoints = context.get_element_qrule().n_points();
112 for (
unsigned int qp=0; qp != n_qpoints; qp++)
114 libMesh::FEBase* fe = context.get_element_fe(this->_flow_vars.u());
116 libMesh::RealGradient g = this->_stab_helper.compute_g( fe, context, qp );
117 libMesh::RealTensor G = this->_stab_helper.compute_G( fe, context, qp );
119 libMesh::Real T = context.interior_value( this->_temp_vars.T(), qp );
121 libMesh::Real mu = this->_mu(T);
123 libMesh::Real rho = this->rho( T, this->get_p0_steady( context, qp ) );
125 libMesh::RealGradient U( context.interior_value( this->_flow_vars.u(), qp ),
126 context.interior_value( this->_flow_vars.v(), qp ) );
127 if( this->_dim == 3 )
128 U(2) = context.interior_value( this->_flow_vars.w(), qp );
130 libMesh::Real tau_M = this->_stab_helper.compute_tau_momentum( context, qp, g, G, rho, U, mu, this->_is_steady );
132 libMesh::RealGradient RM_s = this->compute_res_momentum_steady( context, qp );
136 for (
unsigned int i=0; i != n_p_dofs; i++)
138 Fp(i) += tau_M*RM_s*p_dphi[i][qp]*JxW[qp];
146 template<
class Mu,
class SH,
class TC>
151 const unsigned int n_u_dofs = context.get_dof_indices(this->_flow_vars.u()).size();
154 libmesh_assert (n_u_dofs == context.get_dof_indices(this->_flow_vars.v()).size());
156 libmesh_assert (n_u_dofs == context.get_dof_indices(this->_flow_vars.w()).size());
159 const std::vector<libMesh::Real> &JxW =
160 context.get_element_fe(this->_flow_vars.u())->get_JxW();
163 const std::vector<std::vector<libMesh::Real> >& u_phi =
164 context.get_element_fe(this->_flow_vars.u())->get_phi();
167 const std::vector<std::vector<libMesh::RealGradient> >& u_gradphi =
168 context.get_element_fe(this->_flow_vars.u())->get_dphi();
170 libMesh::DenseSubVector<libMesh::Number> &Fu = context.get_elem_residual(this->_flow_vars.u());
171 libMesh::DenseSubVector<libMesh::Number> &Fv = context.get_elem_residual(this->_flow_vars.v());
172 libMesh::DenseSubVector<libMesh::Real>* Fw = NULL;
174 if( this->_dim == 3 )
176 Fw = &context.get_elem_residual(this->_flow_vars.w());
179 unsigned int n_qpoints = context.get_element_qrule().n_points();
181 for (
unsigned int qp=0; qp != n_qpoints; qp++)
183 libMesh::Real T = context.interior_value( this->_temp_vars.T(), qp );
184 libMesh::Real rho = this->rho( T, this->get_p0_steady( context, qp ) );
186 libMesh::RealGradient U( context.interior_value(this->_flow_vars.u(), qp),
187 context.interior_value(this->_flow_vars.v(), qp) );
189 libMesh::RealGradient grad_u = context.interior_gradient(this->_flow_vars.u(), qp);
190 libMesh::RealGradient grad_v = context.interior_gradient(this->_flow_vars.v(), qp);
191 libMesh::RealGradient grad_w;
193 if( this->_dim == 3 )
195 U(2) = context.interior_value(this->_flow_vars.w(), qp);
196 grad_w = context.interior_gradient(this->_flow_vars.w(), qp);
199 libMesh::FEBase* fe = context.get_element_fe(this->_flow_vars.u());
201 libMesh::RealGradient g = this->_stab_helper.compute_g( fe, context, qp );
202 libMesh::RealTensor G = this->_stab_helper.compute_G( fe, context, qp );
203 libMesh::Real mu = this->_mu(T);
205 libMesh::Real tau_M = this->_stab_helper.compute_tau_momentum( context, qp, g, G, rho, U, mu, this->_is_steady );
206 libMesh::Real tau_C = this->_stab_helper.compute_tau_continuity( tau_M, g );
208 libMesh::Real RC_s = this->compute_res_continuity_steady( context, qp );
209 libMesh::RealGradient RM_s = this->compute_res_momentum_steady( context, qp );
211 for (
unsigned int i=0; i != n_u_dofs; i++)
213 Fu(i) += ( -tau_C*RC_s*u_gradphi[i][qp](0)
214 - tau_M*RM_s(0)*rho*U*u_gradphi[i][qp]
215 + rho*tau_M*RM_s*grad_u*u_phi[i][qp]
216 + tau_M*RM_s(0)*rho*tau_M*RM_s*u_gradphi[i][qp] )*JxW[qp];
218 Fv(i) += ( -tau_C*RC_s*u_gradphi[i][qp](1)
219 - tau_M*RM_s(1)*rho*U*u_gradphi[i][qp]
220 + rho*tau_M*RM_s*grad_v*u_phi[i][qp]
221 + tau_M*RM_s(1)*rho*tau_M*RM_s*u_gradphi[i][qp] )*JxW[qp];
223 if( this->_dim == 3 )
225 (*Fw)(i) += ( -tau_C*RC_s*u_gradphi[i][qp](2)
226 - tau_M*RM_s(2)*rho*U*u_gradphi[i][qp]
227 + rho*tau_M*RM_s*grad_w*u_phi[i][qp]
228 + tau_M*RM_s(2)*rho*tau_M*RM_s*u_gradphi[i][qp] )*JxW[qp];
236 template<
class Mu,
class SH,
class TC>
241 const unsigned int n_T_dofs = context.get_dof_indices(this->_temp_vars.T()).size();
244 const std::vector<libMesh::Real> &JxW =
245 context.get_element_fe(this->_temp_vars.T())->get_JxW();
248 const std::vector<std::vector<libMesh::Real> >& T_phi =
249 context.get_element_fe(this->_temp_vars.T())->get_phi();
252 const std::vector<std::vector<libMesh::RealGradient> >& T_gradphi =
253 context.get_element_fe(this->_temp_vars.T())->get_dphi();
255 libMesh::DenseSubVector<libMesh::Number> &FT = context.get_elem_residual(this->_temp_vars.T());
257 unsigned int n_qpoints = context.get_element_qrule().n_points();
259 for (
unsigned int qp=0; qp != n_qpoints; qp++)
261 libMesh::Number u, v;
262 u = context.interior_value(this->_flow_vars.u(), qp);
263 v = context.interior_value(this->_flow_vars.v(), qp);
265 libMesh::Gradient grad_T = context.interior_gradient(this->_temp_vars.T(), qp);
267 libMesh::NumberVectorValue U(u,v);
269 U(2) = context.interior_value(this->_flow_vars.w(), qp);
271 libMesh::Real T = context.interior_value( this->_temp_vars.T(), qp );
272 libMesh::Real rho = this->rho( T, this->get_p0_steady( context, qp ) );
274 libMesh::Real mu = this->_mu(T);
275 libMesh::Real k = this->_k(T);
276 libMesh::Real cp = this->_cp(T);
278 libMesh::Number rho_cp = rho*this->_cp(T);
280 libMesh::FEBase* fe = context.get_element_fe(this->_flow_vars.u());
282 libMesh::RealGradient g = this->_stab_helper.compute_g( fe, context, qp );
283 libMesh::RealTensor G = this->_stab_helper.compute_G( fe, context, qp );
285 libMesh::Real tau_M = this->_stab_helper.compute_tau_momentum( context, qp, g, G, rho, U, mu, this->_is_steady );
286 libMesh::Real tau_E = this->_stab_helper.compute_tau_energy( context, qp, g, G, rho, U, k, cp, this->_is_steady );
288 libMesh::Real RE_s = this->compute_res_energy_steady( context, qp );
289 libMesh::RealGradient RM_s = this->compute_res_momentum_steady( context, qp );
291 for (
unsigned int i=0; i != n_T_dofs; i++)
293 FT(i) += ( rho_cp*tau_M*RM_s*grad_T*T_phi[i][qp]
294 - rho_cp*tau_E*RE_s*U*T_gradphi[i][qp]
295 + rho_cp*tau_E*RE_s*tau_M*RM_s*T_gradphi[i][qp] )*JxW[qp];
303 template<
class Mu,
class SH,
class TC>
308 const unsigned int n_p_dofs = context.get_dof_indices(this->_press_var.p()).size();
311 const std::vector<libMesh::Real> &JxW =
312 context.get_element_fe(this->_flow_vars.u())->get_JxW();
315 const std::vector<std::vector<libMesh::RealGradient> >& p_dphi =
316 context.get_element_fe(this->_press_var.p())->get_dphi();
318 libMesh::DenseSubVector<libMesh::Number> &Fp = context.get_elem_residual(this->_press_var.p());
320 unsigned int n_qpoints = context.get_element_qrule().n_points();
322 for (
unsigned int qp=0; qp != n_qpoints; qp++)
324 libMesh::FEBase* fe = context.get_element_fe(this->_flow_vars.u());
326 libMesh::RealGradient g = this->_stab_helper.compute_g( fe, context, qp );
327 libMesh::RealTensor G = this->_stab_helper.compute_G( fe, context, qp );
329 libMesh::Real T = context.fixed_interior_value( this->_temp_vars.T(), qp );
330 libMesh::Real rho = this->rho( T, this->get_p0_transient( context, qp ) );
332 libMesh::Real mu = this->_mu(T);
334 libMesh::RealGradient U( context.fixed_interior_value( this->_flow_vars.u(), qp ),
335 context.fixed_interior_value( this->_flow_vars.v(), qp ) );
336 if( this->_dim == 3 )
337 U(2) = context.fixed_interior_value( this->_flow_vars.w(), qp );
339 libMesh::Real tau_M = this->_stab_helper.compute_tau_momentum( context, qp, g, G, rho, U, mu,
false );
340 libMesh::RealGradient RM_t = this->compute_res_momentum_transient( context, qp );
344 for (
unsigned int i=0; i != n_p_dofs; i++)
346 Fp(i) += tau_M*RM_t*p_dphi[i][qp]*JxW[qp];
353 template<
class Mu,
class SH,
class TC>
358 const unsigned int n_u_dofs = context.get_dof_indices(this->_flow_vars.u()).size();
361 libmesh_assert (n_u_dofs == context.get_dof_indices(this->_flow_vars.v()).size());
363 libmesh_assert (n_u_dofs == context.get_dof_indices(this->_flow_vars.w()).size());
366 const std::vector<libMesh::Real> &JxW =
367 context.get_element_fe(this->_flow_vars.u())->get_JxW();
370 const std::vector<std::vector<libMesh::Real> >& u_phi =
371 context.get_element_fe(this->_flow_vars.u())->get_phi();
374 const std::vector<std::vector<libMesh::RealGradient> >& u_gradphi =
375 context.get_element_fe(this->_flow_vars.u())->get_dphi();
377 libMesh::DenseSubVector<libMesh::Number> &Fu = context.get_elem_residual(this->_flow_vars.u());
378 libMesh::DenseSubVector<libMesh::Number> &Fv = context.get_elem_residual(this->_flow_vars.v());
379 libMesh::DenseSubVector<libMesh::Real>* Fw = NULL;
381 if( this->_dim == 3 )
383 Fw = &context.get_elem_residual(this->_flow_vars.w());
386 unsigned int n_qpoints = context.get_element_qrule().n_points();
387 for (
unsigned int qp=0; qp != n_qpoints; qp++)
389 libMesh::Real T = context.fixed_interior_value( this->_temp_vars.T(), qp );
390 libMesh::Real rho = this->rho( T, this->get_p0_transient( context, qp ) );
392 libMesh::Real mu = this->_mu(T);
394 libMesh::RealGradient U( context.fixed_interior_value(this->_flow_vars.u(), qp),
395 context.fixed_interior_value(this->_flow_vars.v(), qp) );
397 libMesh::RealGradient grad_u = context.fixed_interior_gradient(this->_flow_vars.u(), qp);
398 libMesh::RealGradient grad_v = context.fixed_interior_gradient(this->_flow_vars.v(), qp);
399 libMesh::RealGradient grad_w;
401 if( this->_dim == 3 )
403 U(2) = context.fixed_interior_value(this->_flow_vars.w(), qp);
404 grad_w = context.fixed_interior_gradient(this->_flow_vars.w(), qp);
407 libMesh::FEBase* fe = context.get_element_fe(this->_flow_vars.u());
409 libMesh::RealGradient g = this->_stab_helper.compute_g( fe, context, qp );
410 libMesh::RealTensor G = this->_stab_helper.compute_G( fe, context, qp );
412 libMesh::Real tau_M = this->_stab_helper.compute_tau_momentum( context, qp, g, G, rho, U, mu,
false );
413 libMesh::Real tau_C = this->_stab_helper.compute_tau_continuity( tau_M, g );
415 libMesh::Real RC_t = this->compute_res_continuity_transient( context, qp );
416 libMesh::RealGradient RM_s = this->compute_res_momentum_steady( context, qp );
417 libMesh::RealGradient RM_t = this->compute_res_momentum_transient( context, qp );
419 for (
unsigned int i=0; i != n_u_dofs; i++)
421 Fu(i) -= ( tau_C*RC_t*u_gradphi[i][qp](0)
422 + tau_M*RM_t(0)*rho*U*u_gradphi[i][qp]
423 - rho*tau_M*RM_t*grad_u*u_phi[i][qp]
424 - tau_M*(RM_s(0)+RM_t(0))*rho*tau_M*RM_t*u_gradphi[i][qp]
425 - tau_M*RM_t(0)*rho*tau_M*RM_s*u_gradphi[i][qp] )*JxW[qp];
427 Fv(i) -= ( tau_C*RC_t*u_gradphi[i][qp](1)
428 - rho*tau_M*RM_t*grad_v*u_phi[i][qp]
429 + tau_M*RM_t(1)*rho*U*u_gradphi[i][qp]
430 - tau_M*(RM_s(1)+RM_t(1))*rho*tau_M*RM_t*u_gradphi[i][qp]
431 - tau_M*RM_t(1)*rho*tau_M*RM_s*u_gradphi[i][qp] )*JxW[qp];
433 if( this->_dim == 3 )
435 (*Fw)(i) -= ( tau_C*RC_t*u_gradphi[i][qp](2)
436 - rho*tau_M*RM_t*grad_w*u_phi[i][qp]
437 + tau_M*RM_t(2)*rho*U*u_gradphi[i][qp]
438 - tau_M*(RM_s(2)+RM_t(2))*rho*tau_M*RM_t*u_gradphi[i][qp]
439 - tau_M*RM_t(2)*rho*tau_M*RM_s*u_gradphi[i][qp] )*JxW[qp];
447 template<
class Mu,
class SH,
class TC>
452 const unsigned int n_T_dofs = context.get_dof_indices(this->_temp_vars.T()).size();
455 const std::vector<libMesh::Real> &JxW =
456 context.get_element_fe(this->_temp_vars.T())->get_JxW();
459 const std::vector<std::vector<libMesh::Real> >& T_phi =
460 context.get_element_fe(this->_temp_vars.T())->get_phi();
463 const std::vector<std::vector<libMesh::RealGradient> >& T_gradphi =
464 context.get_element_fe(this->_temp_vars.T())->get_dphi();
466 libMesh::DenseSubVector<libMesh::Number> &FT = context.get_elem_residual(this->_temp_vars.T());
468 unsigned int n_qpoints = context.get_element_qrule().n_points();
470 for (
unsigned int qp=0; qp != n_qpoints; qp++)
472 libMesh::Number u, v;
473 u = context.fixed_interior_value(this->_flow_vars.u(), qp);
474 v = context.fixed_interior_value(this->_flow_vars.v(), qp);
476 libMesh::Gradient grad_T = context.fixed_interior_gradient(this->_temp_vars.T(), qp);
478 libMesh::NumberVectorValue U(u,v);
480 U(2) = context.fixed_interior_value(this->_flow_vars.w(), qp);
482 libMesh::Real T = context.fixed_interior_value( this->_temp_vars.T(), qp );
483 libMesh::Real rho = this->rho( T, this->get_p0_transient( context, qp ) );
485 libMesh::Real mu = this->_mu(T);
486 libMesh::Real k = this->_k(T);
487 libMesh::Real cp = this->_cp(T);
489 libMesh::Number rho_cp = rho*this->_cp(T);
491 libMesh::FEBase* fe = context.get_element_fe(this->_flow_vars.u());
493 libMesh::RealGradient g = this->_stab_helper.compute_g( fe, context, qp );
494 libMesh::RealTensor G = this->_stab_helper.compute_G( fe, context, qp );
496 libMesh::Real tau_M = this->_stab_helper.compute_tau_momentum( context, qp, g, G, rho, U, mu,
false );
497 libMesh::Real tau_E = this->_stab_helper.compute_tau_energy( context, qp, g, G, rho, U, k, cp,
false );
499 libMesh::Real RE_s = this->compute_res_energy_steady( context, qp );
500 libMesh::Real RE_t = this->compute_res_energy_transient( context, qp );
502 libMesh::RealGradient RM_s = this->compute_res_momentum_steady( context, qp );
503 libMesh::RealGradient RM_t = this->compute_res_momentum_transient( context, qp );
505 for (
unsigned int i=0; i != n_T_dofs; i++)
507 FT(i) -= ( -rho_cp*tau_M*RM_t*grad_T*T_phi[i][qp]
508 +rho_cp*tau_E*RE_t*U*T_gradphi[i][qp]
509 - rho_cp*tau_E*(RE_s+RE_t)*tau_M*RM_t*T_gradphi[i][qp]
510 - rho_cp*tau_E*RE_t*tau_M*RM_s*T_gradphi[i][qp] )*JxW[qp];
Adds VMS-based stabilization to LowMachNavierStokes physics class.
LowMachNavierStokesVMSStabilization()
virtual ~LowMachNavierStokesVMSStabilization()
virtual void mass_residual(bool compute_jacobian, AssemblyContext &context, CachedValues &cache)
Mass matrix part(s) for element interiors. All boundary terms lie within the time_derivative part...
virtual void element_time_derivative(bool compute_jacobian, AssemblyContext &context, CachedValues &cache)
Time dependent part(s) of physics for element interiors.
void assemble_energy_time_deriv(bool compute_jacobian, AssemblyContext &context)
void assemble_momentum_mass_residual(bool compute_jacobian, AssemblyContext &context)
Adds VMS-based stabilization to LowMachNavierStokes physics class.
void assemble_momentum_time_deriv(bool compute_jacobian, AssemblyContext &context)
void assemble_continuity_mass_residual(bool compute_jacobian, AssemblyContext &context)
void assemble_continuity_time_deriv(bool compute_jacobian, AssemblyContext &context)
void assemble_energy_mass_residual(bool compute_jacobian, AssemblyContext &context)