INSCompressibilityPenalty.h

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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
 
#pragma once
 
#include "Kernel.h"
 
// Forward Declarations
 
class INSCompressibilityPenalty : public Kernel
{
public:
  static InputParameters validParams();
 
  INSCompressibilityPenalty(const InputParameters & parameters);
 
  virtual ~INSCompressibilityPenalty() {}
 
protected:
  virtual Real computeQpResidual();
  virtual Real computeQpJacobian();
  virtual Real computeQpOffDiagJacobian(unsigned jvar);
 
  // penalty value.
  // smaller leads to more accurate solution, but the resulting system is also more difficult to
  // solve
  Real _penalty;
};