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 "LinearFVAdvectionDiffusionExtrapolatedBC.h"
      13             : 
      14             : /**
      15             :  * Class implementing an extrapolated boundary condition for linear finite
      16             :  * volume pressure variables. For cases where the pressure is pinned (so no dirichlet BCs are
      17             :  * applied), we need to extrapolate the pressure when we compute the gradients but we can't add a
      18             :  * source term to the boundary (so no lagged values can go to the boundary).
      19             :  * This means that for the time being we need to build the pressure diffusion system
      20             :  * assuming a one-term expansion even if the user requested two.
      21             :  * For other purposes the extrapolation can be controlled using the `use_two_term_expansion`
      22             :  * parameter.
      23             :  */
      24             : class LinearFVExtrapolatedPressureBC : public LinearFVAdvectionDiffusionExtrapolatedBC
      25             : {
      26             : public:
      27             :   static InputParameters validParams();
      28             : 
      29             :   /**
      30             :    * Class constructor.
      31             :    * @param parameters The InputParameters for the object
      32             :    */
      33             :   LinearFVExtrapolatedPressureBC(const InputParameters & parameters);
      34             : 
      35             :   /**
      36             :    * These will ensure that the linear system will see one-term expansion only.
      37             :    */
      38             :   ///@{
      39             :   virtual Real computeBoundaryGradientMatrixContribution() const override;
      40             :   virtual Real computeBoundaryGradientRHSContribution() const override;
      41             :   ///@}
      42             : 
      43     1719798 :   virtual bool useBoundaryGradientExtrapolation() const override { return true; }
      44             : };