NSImposedVelocityDirectionBC.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 "NodalBC.h"

// Forward Declarations

// Specialization required of all user-level Moose objects

class NSImposedVelocityDirectionBC : public NodalBC
{
public:
  static InputParameters validParams();

  NSImposedVelocityDirectionBC(const InputParameters & parameters);

protected:
  // NodalBC's can (currently) only specialize the computeQpResidual function,
  // the computeQpJacobian() function automatically assembles a "1" onto the main
  // diagonal for this DoF.
  virtual Real computeQpResidual();

  // Coupled variables
  const VariableValue & _rho;
  const VariableValue & _u_vel;
  const VariableValue & _v_vel;
  const VariableValue & _w_vel;

  // The desired value for the unit velocity component
  Real _desired_unit_velocity_component;
};