FVScalarLagrangeMultiplierConstraint.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 "FVQpElementalKernel.h"
 
class FVScalarLagrangeMultiplierConstraint : public FVQpElementalKernel
{
public:
  static InputParameters validParams();
 
  FVScalarLagrangeMultiplierConstraint(const InputParameters & parameters);
 
  const MooseVariableScalar & lambdaVariable() const { return _lambda_var; }
 
protected:
  const PostprocessorValue & _phi0;
 
private:
  void computeResidual() override final;
  void computeJacobian() override final;
  using FVQpElementalKernel::computeOffDiagJacobian;
  void computeOffDiagJacobian() override final;
  void computeResidualAndJacobian() override final;
  ADReal computeQpResidual() override = 0;
 
  const MooseVariableScalar & _lambda_var;
 
  const ADVariableValue & _lambda;
};