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 "KokkosNodalBC.h"
      13             : 
      14             : /**
      15             :  * Implements a simple coupled boundary condition where u=v on the boundary.
      16             :  */
      17             : class KokkosMatchedValueBC final : public Moose::Kokkos::NodalBC<KokkosMatchedValueBC>
      18             : {
      19             : public:
      20             :   static InputParameters validParams();
      21             : 
      22             :   KokkosMatchedValueBC(const InputParameters & parameters);
      23             : 
      24             :   KOKKOS_FUNCTION Real computeQpResidual(const ContiguousNodeID node) const;
      25             :   KOKKOS_FUNCTION Real computeQpOffDiagJacobian(const unsigned int jvar,
      26             :                                                 const ContiguousNodeID node) const;
      27             : 
      28             : protected:
      29             :   const Moose::Kokkos::VariableNodalValue _v;
      30             : 
      31             :   /// The id of the coupled variable
      32             :   const unsigned int _v_num;
      33             :   /// Coefficient for primary variable
      34             :   const Real _u_coeff;
      35             :   /// Coefficient for coupled variable
      36             :   const Real _v_coeff;
      37             : };
      38             : 
      39             : KOKKOS_FUNCTION inline Real
      40          36 : KokkosMatchedValueBC::computeQpResidual(const ContiguousNodeID node) const
      41             : {
      42          36 :   return _u_coeff * _u(node) - _v_coeff * _v(node);
      43             : }
      44             : 
      45             : KOKKOS_FUNCTION inline Real
      46          18 : KokkosMatchedValueBC::computeQpOffDiagJacobian(const unsigned int jvar,
      47             :                                                const ContiguousNodeID /* node */) const
      48             : {
      49          18 :   if (jvar == _v_num)
      50          18 :     return -_v_coeff;
      51             :   else
      52           0 :     return 0;
      53             : }