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Panzer_ProjectToFaces_impl.hpp
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3//
4// Panzer: A partial differential equation assembly
5// engine for strongly coupled complex multiphysics systems
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42
43#ifndef PANZER_PROJECT_TO_FACES_IMPL_HPP
44#define PANZER_PROJECT_TO_FACES_IMPL_HPP
45
46#include "Teuchos_Assert.hpp"
47#include "Phalanx_DataLayout.hpp"
48
49#include "Intrepid2_Cubature.hpp"
50#include "Intrepid2_DefaultCubatureFactory.hpp"
51#include "Intrepid2_FunctionSpaceTools.hpp"
52#include "Intrepid2_Kernels.hpp"
53#include "Intrepid2_CellTools.hpp"
54#include "Intrepid2_OrientationTools.hpp"
55
57#include "Panzer_PureBasis.hpp"
60#include "Kokkos_ViewFactory.hpp"
61
62#include "Teuchos_FancyOStream.hpp"
63
64#include <cstring>
65
66template<typename EvalT,typename Traits>
68ProjectToFaces(const Teuchos::ParameterList& p)
69{
70 dof_name_ = (p.get< std::string >("DOF Name"));
71
72 if(p.isType< Teuchos::RCP<PureBasis> >("Basis"))
73 basis_ = p.get< Teuchos::RCP<PureBasis> >("Basis");
74 else
75 basis_ = p.get< Teuchos::RCP<const PureBasis> >("Basis");
76
77 Teuchos::RCP<PHX::DataLayout> basis_layout = basis_->functional;
78 Teuchos::RCP<PHX::DataLayout> vector_layout = basis_->functional_grad;
79
80 // some sanity checks
81 TEUCHOS_ASSERT(basis_->isVectorBasis());
82
83 result_ = PHX::MDField<ScalarT,Cell,BASIS>(dof_name_,basis_layout);
84 this->addEvaluatedField(result_);
85
86 normals_ = PHX::MDField<const ScalarT,Cell,BASIS,Dim>(dof_name_+"_Normals",vector_layout);
87 this->addDependentField(normals_);
88
89 vector_values_ = PHX::MDField<const ScalarT,Cell,BASIS,Dim>(dof_name_+"_Vector",vector_layout);
90 this->addDependentField(vector_values_);
91
92 this->setName("Project To Faces");
93}
94
95// **********************************************************************
96template<typename EvalT,typename Traits>
100{
101 num_faces_ = result_.extent(1);
102 num_dim_ = vector_values_.extent(2);
103
104 TEUCHOS_ASSERT(result_.extent(1) == normals_.extent(1));
105 TEUCHOS_ASSERT(vector_values_.extent(2) == normals_.extent(2));
106}
107
108// **********************************************************************
109template<typename EvalT,typename Traits>
111evaluateFields(typename Traits::EvalData workset)
112{
113
114 // Restricting HDiv field, multiplied by the normal to the faces, into HVol on the faces.
115 // This code assumes affine mapping and the projection into 1 quadrature point for each face,
116 // which is identified with the face. This makes sense only for low order bases, for which
117 // HVol is constant
118
119 //TODO: make this work w/ high order basis
120 const int intDegree = basis_->order();
121 TEUCHOS_ASSERT(intDegree == 1);
122
123 auto result = result_.get_static_view();
124 auto vector_values = vector_values_.get_static_view();
125 auto normals = normals_.get_static_view();
126 auto num_faces = num_faces_;
127 auto num_dim = num_dim_;
128
129 auto policy = panzer::HP::inst().teamPolicy<ScalarT,PHX::exec_space>(workset.num_cells);
130 Kokkos::parallel_for("panzer::ProjectToFaces",policy,KOKKOS_LAMBDA(const Kokkos::TeamPolicy<PHX::exec_space>::member_type& team) {
131 const auto cell = team.league_rank();
132 Kokkos::parallel_for(Kokkos::TeamThreadRange(team,0,num_faces),[&] (const int p) {
133 result(cell,p) = ScalarT(0.0);
134 for (int dim = 0; dim < num_dim; ++dim)
135 result(cell,p) += vector_values(cell,p,dim) * normals(cell,p,dim);
136 });
137 });
138}
139
140
141#endif
PHX::MDField< ScalarT, panzer::Cell, panzer::IP > result
A field that will be used to build up the result of the integral we're performing.
static HP & inst()
Private ctor.
Kokkos::TeamPolicy< TeamPolicyProperties... > teamPolicy(const int &league_size)
Returns a TeamPolicy for hierarchic parallelism.
ProjectToFaces(const Teuchos::ParameterList &p)
void evaluateFields(typename Traits::EvalData d)
void postRegistrationSetup(typename Traits::SetupData d, PHX::FieldManager< Traits > &vm)
int num_cells
DEPRECATED - use: numCells()