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             : #include "NSGravityPower.h"
      11             : 
      12             : registerMooseObject("NavierStokesApp", NSGravityPower);
      13             : 
      14             : InputParameters
      15           0 : NSGravityPower::validParams()
      16             : {
      17           0 :   InputParameters params = Kernel::validParams();
      18           0 :   params.addClassDescription("This class computes the momentum contributed by gravity.");
      19           0 :   params.addRequiredCoupledVar("momentum", "");
      20           0 :   params.addRequiredParam<Real>("acceleration", "The body force vector component.");
      21           0 :   return params;
      22           0 : }
      23             : 
      24           0 : NSGravityPower::NSGravityPower(const InputParameters & parameters)
      25             :   : Kernel(parameters),
      26           0 :     _momentum_var(coupled("momentum")),
      27           0 :     _momentum(coupledValue("momentum")),
      28           0 :     _acceleration(getParam<Real>("acceleration"))
      29             : {
      30           0 : }
      31             : 
      32             : Real
      33           0 : NSGravityPower::computeQpResidual()
      34             : {
      35             :   // -(rho * U * g) * phi
      36           0 :   return -_momentum[_qp] * _acceleration * _test[_i][_qp];
      37             : }
      38             : 
      39             : Real
      40           0 : NSGravityPower::computeQpJacobian()
      41             : {
      42           0 :   return 0.0;
      43             : }
      44             : 
      45             : Real
      46           0 : NSGravityPower::computeQpOffDiagJacobian(unsigned int jvar)
      47             : {
      48           0 :   if (jvar == _momentum_var)
      49           0 :     return -_phi[_j][_qp] * _acceleration * _test[_i][_qp];
      50             : 
      51             :   return 0.0;
      52             : }