VertexCFD_BoundaryState_IncompressibleWallFunction_impl.hpp

#ifndef VERTEXCFD_BOUNDARYSTATE_INCOMPRESSIBLEWALLFUNCTION_IMPL_HPP
#define VERTEXCFD_BOUNDARYSTATE_INCOMPRESSIBLEWALLFUNCTION_IMPL_HPP
 
#include <utils/VertexCFD_Utils_VectorField.hpp>
 
#include <Panzer_HierarchicParallelism.hpp>
 
namespace VertexCFD
{
namespace BoundaryCondition
{
//---------------------------------------------------------------------------//
template<class EvalType, class Traits, int NumSpaceDim>
IncompressibleWallFunction<EvalType, Traits, NumSpaceDim>::IncompressibleWallFunction(
    const panzer::IntegrationRule& ir,
    const Teuchos::ParameterList& fluid_params,
    const bool is_edac)
    : _boundary_lagrange_pressure("BOUNDARY_lagrange_pressure", ir.dl_scalar)
    , _boundary_grad_lagrange_pressure("BOUNDARY_GRAD_lagrange_pressure",
                                       ir.dl_vector)
    , _boundary_temperature("BOUNDARY_temperature", ir.dl_scalar)
    , _boundary_grad_temperature("BOUNDARY_GRAD_temperature", ir.dl_vector)
    , _lagrange_pressure("lagrange_pressure", ir.dl_scalar)
    , _grad_lagrange_pressure("GRAD_lagrange_pressure", ir.dl_vector)
    , _temperature("temperature", ir.dl_scalar)
    , _grad_temperature("GRAD_temperature", ir.dl_vector)
    , _normals("Side Normal", ir.dl_vector)
    , _solve_temp(fluid_params.get<bool>("Build Temperature Equation"))
    , _is_edac(is_edac)
{
    this->addEvaluatedField(_boundary_lagrange_pressure);
    if (_is_edac)
        this->addEvaluatedField(_boundary_grad_lagrange_pressure);
    Utils::addEvaluatedVectorField(
        *this, ir.dl_scalar, _boundary_velocity, "BOUNDARY_velocity_");
 
    Utils::addEvaluatedVectorField(*this,
                                   ir.dl_vector,
                                   _boundary_grad_velocity,
                                   "BOUNDARY_GRAD_velocity_");
 
    if (_solve_temp)
    {
        this->addDependentField(_temperature);
        this->addEvaluatedField(_boundary_temperature);
        this->addDependentField(_grad_temperature);
        this->addEvaluatedField(_boundary_grad_temperature);
    }
 
    Utils::addDependentVectorField(*this, ir.dl_scalar, _velocity, "velocity_");
    this->addDependentField(_lagrange_pressure);
    if (_is_edac)
        this->addDependentField(_grad_lagrange_pressure);
 
    this->addDependentField(_normals);
 
    this->setName("Boundary State Incompressible Wall Function "
                  + std::to_string(num_space_dim) + "D");
}
 
//---------------------------------------------------------------------------//
template<class EvalType, class Traits, int NumSpaceDim>
void IncompressibleWallFunction<EvalType, Traits, NumSpaceDim>::evaluateFields(
    typename Traits::EvalData workset)
{
    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
IncompressibleWallFunction<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);
    const int num_grad_dim = _normals.extent(2);
 
    Kokkos::parallel_for(
        Kokkos::TeamThreadRange(team, 0, num_point), [&](const int point) {
            // Set boundary Lagrange pressure
            _boundary_lagrange_pressure(cell, point)
                = _lagrange_pressure(cell, point);
 
            if (_solve_temp)
            {
                _boundary_temperature(cell, point) = _temperature(cell, point);
            }
 
            // Set boundary velocity and boundary gradients
            for (int dim = 0; dim < num_grad_dim; ++dim)
            {
                if (_is_edac)
                {
                    _boundary_grad_lagrange_pressure(cell, point, dim)
                        = _grad_lagrange_pressure(cell, point, dim);
                }
                // Initialize boundary velocity and temperature gradient to
                // interior fields (modified in subsequent loop)
                _boundary_velocity[dim](cell, point)
                    = _velocity[dim](cell, point);
 
                if (_solve_temp)
                {
                    _boundary_grad_temperature(cell, point, dim)
                        = _grad_temperature(cell, point, dim);
                }
 
                for (int vel_dim = 0; vel_dim < num_space_dim; ++vel_dim)
                {
                    // Set no-penetration velocity condition
                    _boundary_velocity[dim](cell, point)
                        -= _velocity[vel_dim](cell, point)
                           * _normals(cell, point, vel_dim)
                           * _normals(cell, point, dim);
 
                    // Set boundary velocity gradient to arbitrary value (zero)
                    // The boundary velocity gradient is required for the
                    // viscous flux closure, which is called on the boundary
                    // for the continuity and energy equations even if a wall
                    // function is used for velocity.
                    _boundary_grad_velocity[dim](cell, point, vel_dim) = 0.0;
 
                    if (_solve_temp)
                    {
                        // TODO: this BC currently assumes an insulated wall.
                        // A future MR should implement the correct wall
                        // function for the energy equation.
                        _boundary_grad_temperature(cell, point, dim)
                            -= _grad_temperature(cell, point, vel_dim)
                               * _normals(cell, point, vel_dim)
                               * _normals(cell, point, dim);
                    }
 
                    if (_is_edac)
                    {
                        _boundary_grad_lagrange_pressure(cell, point, dim)
                            -= _grad_lagrange_pressure(cell, point, vel_dim)
                               * _normals(cell, point, vel_dim)
                               * _normals(cell, point, dim);
                    }
                }
            }
        });
}
 
//---------------------------------------------------------------------------//
 
} // end namespace BoundaryCondition
} // end namespace VertexCFD
 
#endif // VERTEXCFD_BOUNDARYSTATE_INCOMPRESSIBLEWALLFUNCTION_IMPL_HPP