NSMomentumInviscidFluxWithGradP.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 "NSKernel.h"
#include "NSPressureDerivs.h"
 
// ForwardDeclarations
 
class NSMomentumInviscidFluxWithGradP : public NSKernel
{
public:
  static InputParameters validParams();
 
  NSMomentumInviscidFluxWithGradP(const InputParameters & parameters);
 
protected:
  virtual Real computeQpResidual();
  virtual Real computeQpJacobian();
  virtual Real computeQpOffDiagJacobian(unsigned int jvar);
 
  // Coupled gradients
  const VariableGradient & _grad_p;
 
  // Parameters
  const unsigned int _component;
 
private:
  // Computes the Jacobian contribution due to the pressure term,
  // by summing over the appropriate Hessian row.
  Real pressureQpJacobianHelper(unsigned var_number);
 
  // Single vector to refer to all gradients.  We have to store
  // pointers since you can't have a vector<Foo&>.  Initialized in
  // the ctor.
  std::vector<const VariableGradient *> _gradU;
 
  // An object for computing pressure derivatives.
  // Constructed via a reference to ourself
  NSPressureDerivs<NSMomentumInviscidFluxWithGradP> _pressure_derivs;
 
  // Declare ourselves friend to the helper class.
  template <class U>
  friend class NSPressureDerivs;
};