VectorDiffusion.C

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//* This file is part of the MOOSE framework
//* https://mooseframework.inl.gov
//*
//* All rights reserved, see COPYRIGHT for full restrictions
//* https://github.com/idaholab/moose/blob/master/COPYRIGHT
//*
//* Licensed under LGPL 2.1, please see LICENSE for details
//* https://www.gnu.org/licenses/lgpl-2.1.html
 
#include "VectorDiffusion.h"
 
registerMooseObject("MooseApp", VectorDiffusion);
 
InputParameters
VectorDiffusion::validParams()
{
  InputParameters params = VectorKernel::validParams();
  params.addClassDescription(
      "The Laplacian operator ($-\\nabla \\cdot \\nabla \\vec{u}$), with the weak "
      "form of $(\\nabla \\vec{\\phi_i}, \\nabla \\vec{u_h})$.");
  return params;
}
 
VectorDiffusion::VectorDiffusion(const InputParameters & parameters) : VectorKernel(parameters) {}
 
Real
VectorDiffusion::computeQpResidual()
{
  return _grad_u[_qp].contract(_grad_test[_i][_qp]);
}
 
Real
VectorDiffusion::computeQpJacobian()
{
  return _grad_phi[_j][_qp].contract(_grad_test[_i][_qp]);
}