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 "NSGravityForce.h"
      11             : 
      12             : registerMooseObject("NavierStokesApp", NSGravityForce);
      13             : 
      14             : InputParameters
      15           0 : NSGravityForce::validParams()
      16             : {
      17           0 :   InputParameters params = NSKernel::validParams();
      18           0 :   params.addClassDescription("This class computes the gravity force contribution.");
      19             :   // The strength of the acceleration in the _component direction.  Make this
      20             :   // value negative if you want force in the -_component direction.
      21           0 :   params.addRequiredParam<Real>("acceleration", "The body force vector component.");
      22           0 :   return params;
      23           0 : }
      24             : 
      25           0 : NSGravityForce::NSGravityForce(const InputParameters & parameters)
      26           0 :   : NSKernel(parameters), _acceleration(getParam<Real>("acceleration"))
      27             : {
      28           0 : }
      29             : 
      30             : Real
      31           0 : NSGravityForce::computeQpResidual()
      32             : {
      33             :   // -rho * g * phi
      34           0 :   return -_rho[_qp] * _acceleration * _test[_i][_qp];
      35             : }
      36             : 
      37             : Real
      38           0 : NSGravityForce::computeQpJacobian()
      39             : {
      40           0 :   return 0.0;
      41             : }
      42             : 
      43             : Real
      44           0 : NSGravityForce::computeQpOffDiagJacobian(unsigned int jvar)
      45             : {
      46           0 :   if (jvar == _rho_var_number)
      47           0 :     return -_phi[_j][_qp] * _acceleration * _test[_i][_qp];
      48             : 
      49             :   return 0.0;
      50             : }