VertexCFD_Closure_MethodManufacturedSolution_impl.hpp

#ifndef VERTEXCFD_CLOSURE_METHODMANUFACTUREDSOLUTION_IMPL_HPP
#define VERTEXCFD_CLOSURE_METHODMANUFACTUREDSOLUTION_IMPL_HPP
 
#include "utils/VertexCFD_Utils_Constants.hpp"
#include "utils/VertexCFD_Utils_VectorField.hpp"
 
#include <Panzer_GlobalIndexer.hpp>
#include <Panzer_HierarchicParallelism.hpp>
#include <Panzer_PureBasis.hpp>
#include <Panzer_Workset_Utilities.hpp>
#include <Teuchos_Array.hpp>
 
#include <cmath>
#include <string>
 
namespace VertexCFD
{
namespace ClosureModel
{
//---------------------------------------------------------------------------//
template<class EvalType, class Traits, int NumSpaceDim>
MethodManufacturedSolution<EvalType, Traits, NumSpaceDim>::MethodManufacturedSolution(
    const panzer::IntegrationRule& ir)
    : _lagrange_pressure("Exact_lagrange_pressure", ir.dl_scalar)
    , _temperature("Exact_temperature", ir.dl_scalar)
    , _ir_degree(ir.cubature_degree)
 
{
    this->addEvaluatedField(_lagrange_pressure);
    Utils::addEvaluatedVectorField(
        *this, ir.dl_scalar, _velocity, "Exact_velocity_");
    this->addEvaluatedField(_temperature);
 
    this->setName("Method of Manufactured Solution "
                  + std::to_string(num_space_dim) + "D");
 
    _phi_coeff[0] = 0.0125;
    _phi_coeff[1] = 1.0;
    _phi_coeff[2] = 0.25;
    _phi_coeff[3] = 0.5;
    _phi_coeff[4] = 0.125;
    _phi_coeff[5] = 0.0;
 
    _vel_coeff[0][0] = 0.0125;
    _vel_coeff[0][1] = 0.08;
    _vel_coeff[0][2] = 0.125;
    _vel_coeff[0][3] = 0.0;
    _vel_coeff[0][4] = 0.125;
    _vel_coeff[0][5] = 0.25;
 
    _vel_coeff[1][0] = 0.0375;
    _vel_coeff[1][1] = 1.125;
    _vel_coeff[1][2] = 0.25;
    _vel_coeff[1][3] = 0.0;
    _vel_coeff[1][4] = 0.375;
    _vel_coeff[1][5] = 0.5;
 
    _T_coeff[0] = 0.0625;
    _T_coeff[1] = 1.0;
    _T_coeff[2] = 0.375;
    _T_coeff[3] = 0.25;
    _T_coeff[4] = 0.25;
    _T_coeff[5] = 0.5;
 
    if (num_space_dim == 3)
    {
        _phi_coeff[6] = 0.375;
        _phi_coeff[7] = 1.0;
 
        _vel_coeff[0][6] = 0.25;
        _vel_coeff[0][7] = 0.0;
 
        _vel_coeff[1][6] = 0.25;
        _vel_coeff[1][7] = 0.5;
 
        _vel_coeff[2][0] = 0.025;
        _vel_coeff[2][1] = 0.0;
        _vel_coeff[2][2] = 0.125;
        _vel_coeff[2][3] = 1.0;
        _vel_coeff[2][4] = 0.25;
        _vel_coeff[2][5] = 0.25;
        _vel_coeff[2][6] = 0.25;
        _vel_coeff[2][7] = 0.25;
 
        _T_coeff[6] = 0.125;
        _T_coeff[7] = 0.5;
    }
}
 
//---------------------------------------------------------------------------//
template<class EvalType, class Traits, int NumSpaceDim>
void MethodManufacturedSolution<EvalType, Traits, NumSpaceDim>::postRegistrationSetup(
    typename Traits::SetupData sd, PHX::FieldManager<Traits>&)
{
    _ir_index = panzer::getIntegrationRuleIndex(_ir_degree, (*sd.worksets_)[0]);
}
 
//---------------------------------------------------------------------------//
template<class EvalType, class Traits, int NumSpaceDim>
void MethodManufacturedSolution<EvalType, Traits, NumSpaceDim>::evaluateFields(
    typename Traits::EvalData workset)
{
    _ip_coords = workset.int_rules[_ir_index]->ip_coordinates;
    auto policy = panzer::HP::inst().teamPolicy<scalar_type, PHX::Device>(
        workset.num_cells);
    Kokkos::parallel_for(this->getName(), policy, *this);
}
 
//---------------------------------------------------------------------------//
template<class EvalType, class Traits, int NumSpaceDim>
KOKKOS_INLINE_FUNCTION void
MethodManufacturedSolution<EvalType, Traits, NumSpaceDim>::operator()(
    const Kokkos::TeamPolicy<PHX::exec_space>::member_type& team) const
{
    const int cell = team.league_rank();
    const int num_point = _lagrange_pressure.extent(1);
    using Constants::pi;
    using std::sin;
 
    Kokkos::parallel_for(
        Kokkos::TeamThreadRange(team, 0, num_point), [&](const int point) {
            // function = B + A * sin(2*pi*f_x*(x-phi_x)) *
            // sin(2*pi*f_y*(y-phi_y))
            //                  * sin(2*pi*f_z*(z-phi_z)) for 3D
            auto set_function
                = [=](const Kokkos::Array<double, num_coeff> coeff,
                      const Kokkos::Array<double, num_space_dim> x) {
                      const double val
                          = coeff[0]
                            * sin(2.0 * pi * coeff[2] * (x[0] - coeff[3]))
                            * sin(2.0 * pi * coeff[4] * (x[1] - coeff[5]));
                      const double return_val
                          = num_space_dim == 2
                                ? val + coeff[1]
                                : val
                                          * sin(2.0 * pi * coeff[6]
                                                * (x[2] - coeff[7]))
                                      + coeff[1];
                      return return_val;
                  };
 
            Kokkos::Array<double, num_space_dim> x;
            for (int dim = 0; dim < num_space_dim; ++dim)
                x[dim] = _ip_coords(cell, point, dim);
 
            _lagrange_pressure(cell, point) = set_function(_phi_coeff, x);
            _temperature(cell, point) = set_function(_T_coeff, x);
            for (int i = 0; i < num_space_dim; ++i)
                _velocity[i](cell, point) = set_function(_vel_coeff[i], x);
        });
}
 
//---------------------------------------------------------------------------//
 
} // end namespace ClosureModel
} // end namespace VertexCFD
 
#endif // VERTEXCFD_CLOSURE_METHODMANUFACTUREDSOLUTION_IMPL_HPP