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             : 
      14             : // Forward Declarations
      15             : 
      16             : /**
      17             :  * Base class for the "No BC" boundary condition.  Subclasses will
      18             :  * implement the computeQpXYZ() functions differently based on whether the
      19             :  * "traction" or "Laplacian" form of the viscous stress tensor is
      20             :  * used.  The idea behind this is discussed by Griffiths, Papanastiou,
      21             :  * and others.  Note that this BC, unlike the natural BC, is
      22             :  * insufficient to set the value of the pressure in outflow problems,
      23             :  * and therefore you will need to implement a pressure pin or similar
      24             :  * approach for constraining the null space of constant pressures.
      25             :  */
      26             : class INSMomentumNoBCBCBase : public IntegratedBC
      27             : {
      28             : public:
      29             :   static InputParameters validParams();
      30             : 
      31             :   INSMomentumNoBCBCBase(const InputParameters & parameters);
      32             : 
      33         132 :   virtual ~INSMomentumNoBCBCBase() {}
      34             : 
      35             : protected:
      36             :   // Coupled variables
      37             :   const VariableValue & _u_vel;
      38             :   const VariableValue & _v_vel;
      39             :   const VariableValue & _w_vel;
      40             :   const VariableValue & _p;
      41             : 
      42             :   // Gradients
      43             :   const VariableGradient & _grad_u_vel;
      44             :   const VariableGradient & _grad_v_vel;
      45             :   const VariableGradient & _grad_w_vel;
      46             : 
      47             :   // Variable numberings
      48             :   unsigned _u_vel_var_number;
      49             :   unsigned _v_vel_var_number;
      50             :   unsigned _w_vel_var_number;
      51             :   unsigned _p_var_number;
      52             : 
      53             :   RealVectorValue _gravity;
      54             :   unsigned _component;
      55             :   bool _integrate_p_by_parts;
      56             : 
      57             :   const MaterialProperty<Real> & _mu;
      58             :   const MaterialProperty<Real> & _rho;
      59             : };