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             : #pragma once
      11             : 
      12             : #include "IntegratedBC.h"
      13             : #include "DiffusionLHDGAssemblyHelper.h"
      14             : 
      15             : /**
      16             :  * Implements a fixed normal gradient boundary condition for use with a hybridized discretization of
      17             :  * the diffusion equation
      18             :  */
      19             : class DiffusionLHDGPrescribedGradientBC : public IntegratedBC, public DiffusionLHDGAssemblyHelper
      20             : {
      21             : public:
      22             :   static InputParameters validParams();
      23             : 
      24             :   DiffusionLHDGPrescribedGradientBC(const InputParameters & parameters);
      25             : 
      26             :   virtual void computeResidual() override;
      27             :   virtual void computeJacobian() override;
      28             :   virtual void computeOffDiagJacobian(unsigned int jvar) override;
      29             :   virtual void jacobianSetup() override;
      30             :   virtual void initialSetup() override;
      31             : 
      32             : protected:
      33           0 :   virtual Real computeQpResidual() override { mooseError("this will never be called"); }
      34             : 
      35             :   /// Prescribed normal gradient along the boundary. The default is 0 for a natural boundary
      36             :   /// condition
      37             :   const Moose::Functor<Real> & _normal_gradient;
      38             : 
      39             :   /// A cache variable to prevent multiple computations of Jacobians
      40             :   unsigned int _cached_side;
      41             : };