Line data    Source code

       1             : //* This file is part of the MOOSE framework
       2             : //* https://mooseframework.inl.gov
       3             : //*
       4             : //* All rights reserved, see COPYRIGHT for full restrictions
       5             : //* https://github.com/idaholab/moose/blob/master/COPYRIGHT
       6             : //*
       7             : //* Licensed under LGPL 2.1, please see LICENSE for details
       8             : //* https://www.gnu.org/licenses/lgpl-2.1.html
       9             : 
      10             : #pragma once
      11             : 
      12             : #include "KokkosIntegratedBC.h"
      13             : 
      14             : /**
      15             :  * Implements a Neumann BC where grad(u)=_coupled_var on the boundary.
      16             :  * Uses the term produced from integrating the diffusion operator by parts.
      17             :  */
      18             : class KokkosCoupledVarNeumannBC final
      19             :   : public Moose::Kokkos::IntegratedBC<KokkosCoupledVarNeumannBC>
      20             : {
      21             : public:
      22             :   static InputParameters validParams();
      23             : 
      24             :   KokkosCoupledVarNeumannBC(const InputParameters & parameters);
      25             : 
      26             :   KOKKOS_FUNCTION Real computeQpResidual(const unsigned int i,
      27             :                                          const unsigned int qp,
      28             :                                          ResidualDatum & datum) const;
      29             :   KOKKOS_FUNCTION Real computeQpOffDiagJacobian(const unsigned int i,
      30             :                                                 const unsigned int j,
      31             :                                                 const unsigned int jvar,
      32             :                                                 const unsigned int qp,
      33             :                                                 ResidualDatum & datum) const;
      34             : 
      35             : protected:
      36             :   /// Variable providing the value of grad(u) on the boundary.
      37             :   const Moose::Kokkos::VariableValue _coupled_var;
      38             : 
      39             :   /// The identifying number of the coupled variable
      40             :   const unsigned int _coupled_num;
      41             : 
      42             :   /// A coefficient that is multiplied with the residual contribution
      43             :   const Real _coef;
      44             : 
      45             :   /// Scale factor
      46             :   const Moose::Kokkos::VariableValue _scale_factor;
      47             : };
      48             : 
      49             : KOKKOS_FUNCTION inline Real
      50       29396 : KokkosCoupledVarNeumannBC::computeQpResidual(const unsigned int i,
      51             :                                              const unsigned int qp,
      52             :                                              ResidualDatum & datum) const
      53             : {
      54       29396 :   return -_scale_factor(datum, qp) * _coef * _test(datum, i, qp) * _coupled_var(datum, qp);
      55             : }
      56             : 
      57             : KOKKOS_FUNCTION inline Real
      58          80 : KokkosCoupledVarNeumannBC::computeQpOffDiagJacobian(const unsigned int i,
      59             :                                                     const unsigned int j,
      60             :                                                     const unsigned int jvar,
      61             :                                                     const unsigned int qp,
      62             :                                                     ResidualDatum & datum) const
      63             : {
      64          80 :   if (jvar == _coupled_num)
      65          80 :     return -_scale_factor(datum, qp) * _coef * _test(datum, i, qp) * _phi(datum, j, qp);
      66             :   else
      67           0 :     return 0;
      68             : }