NSMomentumViscousBC.h

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//* This file is part of the MOOSE framework
//* https://www.mooseframework.org
//*
//* 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
 
#pragma once
 
#include "NSIntegratedBC.h"
#include "NSViscStressTensorDerivs.h"
 
// Forward Declarations
class NSMomentumViscousBC;
 
template <>
InputParameters validParams<NSMomentumViscousBC>();
 
class NSMomentumViscousBC : public NSIntegratedBC
{
public:
  NSMomentumViscousBC(const InputParameters & parameters);
 
protected:
  virtual Real computeQpResidual();
  virtual Real computeQpJacobian();
  virtual Real computeQpOffDiagJacobian(unsigned jvar);
 
  // Which spatial component of the momentum equations (0,1, or 2) is this
  // kernel applied in?
  const unsigned _component;
 
  // An object for computing viscous stress tensor derivatives.
  // Constructed via a reference to ourself so we can access all of our data.
  NSViscStressTensorDerivs<NSMomentumViscousBC> _vst_derivs;
 
  // Declare ourselves friend to the helper class.
  template <class U>
  friend class NSViscStressTensorDerivs;
};