calculate_normal_eq.h

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//    |  /           |
//    ' /   __| _` | __|  _ \   __|
//    . \  |   (   | |   (   |\__ `
//   _|\_\_|  \__,_|\__|\___/ ____/
//                   Multi-Physics
//
//  License:         BSD License
//                   Kratos default license: kratos/license.txt
//
//  Main author:     Alex Jarauta
//  Co-author  :     Elaf Mahrous
 
 
 
#if !defined(CALCULATE_NORMAL_EQ_INCLUDED )
#define  CALCULATE_NORMAL_EQ_INCLUDED
 
 
 
// System includes
#include <string>
#include <iostream>
#include <algorithm>
 
// External includes
 
 
// Project includes
#include <pybind11/pybind11.h>
#include "includes/define.h"
#include "includes/define_python.h"
 
#include "includes/model_part.h"
#include "includes/node.h"
#include "utilities/math_utils.h"
#include "utilities/geometry_utilities.h"
#include "processes/process.h"
#include "includes/condition.h"
#include "includes/element.h"
#include "ULF_application.h"
 
 
 
namespace Kratos
{
 
 
 
 
 
 
 
 
  class CalculateNormalEq
  : public Process
  {
  public:
 
 
    KRATOS_CLASS_POINTER_DEFINITION(CalculateNormalEq);
 
 
    CalculateNormalEq()
    {   
    }
 
    ~CalculateNormalEq() override
    {
    }
 
 
 
    //  void operator()()
    //  {
    //      MergeParts();
    //  }
 
 
    
 
    void CalculateNormalEq3D(ModelPart& ThisModelPart)
    {
    KRATOS_TRY
    
    double pi = 3.14159265359;
    double theta_eq = ThisModelPart.GetProcessInfo()[CONTACT_ANGLE_STATIC];
    double theta_rad = theta_eq*pi/180.0;
    
    array_1d<double,3> normal_eq = ZeroVector(3);
    array_1d<double,3> normal_xy = ZeroVector(3);
    normal_xy[2] = 1.0;
    array_1d<double,2> temp = ZeroVector(2);
    
    for(ModelPart::NodesContainerType::iterator im = ThisModelPart.NodesBegin() ; im != ThisModelPart.NodesEnd() ; ++im)
    {
        //Find the neighbours of TRIPLE_POINT at the boundary
        if (im->FastGetSolutionStepValue(TRIPLE_POINT) != 0.0)
        {
        temp[0] = im->FastGetSolutionStepValue(NORMAL_TRIPLE_POINT_X);
        temp[1] = im->FastGetSolutionStepValue(NORMAL_TRIPLE_POINT_Y);
        temp = NormalizeVec2D(temp);
        normal_eq[0] = sin(theta_rad)*temp[0];
        normal_eq[1] = sin(theta_rad)*temp[1];
        normal_eq[2] = cos(theta_rad);
        normal_eq = NormalizeVec3D(normal_eq);        
        im->FastGetSolutionStepValue(NORMAL_EQUILIBRIUM) = normal_eq;
        
        im->FastGetSolutionStepValue(NORMAL_CONTACT_LINE_EQUILIBRIUM_X) = -cos(theta_rad)*temp[0];
        im->FastGetSolutionStepValue(NORMAL_CONTACT_LINE_EQUILIBRIUM_Y) = -cos(theta_rad)*temp[1];      
        im->FastGetSolutionStepValue(NORMAL_CONTACT_LINE_EQUILIBRIUM_Z) = sin(theta_rad);
        im->FastGetSolutionStepValue(NORMAL_CONTACT_LINE_EQUILIBRIUM) = NormalizeVec3D(im->FastGetSolutionStepValue(NORMAL_CONTACT_LINE_EQUILIBRIUM));
 
        }
        else
        im->FastGetSolutionStepValue(NORMAL_CONTACT_LINE_EQUILIBRIUM) = ZeroVector(3);
    }   
    KRATOS_CATCH("")
    }    
    
   
    
    array_1d<double,2> Vector2D(const double x0, const double y0, const double x1, const double y1)
    {
      array_1d<double,2> r01;
      r01[0] = x1 - x0;
      r01[1] = y1 - y0;
      return r01;
    }    
    
    array_1d<double,3> Vector3D(const double x0, const double y0, const double z0,
          const double x1, const double y1, const double z1)
    {
      array_1d<double,3> r01;
      r01[0] = x1 - x0;
      r01[1] = y1 - y0;
      r01[2] = z1 - z0;
      return r01;
    }
    
    double Norm2D(const array_1d<double,2>& a)
    {
      return sqrt(a[0]*a[0] + a[1]*a[1]);
    }
    
    double Norm3D(const array_1d<double,3>& a)
    {
      return sqrt(a[0]*a[0] + a[1]*a[1] + a[2]*a[2]);
    }
    
    array_1d<double,2> NormalizeVec2D(array_1d<double,2>& input)
    {
      double norm = Norm2D(input);
      if (norm != 0.0)
      {
    input[0] /= norm;
    input[1] /= norm;
      }
      return input;
    }       
    
    array_1d<double,3> NormalizeVec3D(array_1d<double,3>& input)
    {
      double norm = Norm3D(input);
      if (norm != 0.0)
      {
    input[0] /= norm;
    input[1] /= norm;
    input[2] /= norm;
      }
      return input;
    }    
    
   array_1d<double,3> SumVecs3D(const array_1d<double,3>& a, const array_1d<double,3>& b)
    {
      array_1d<double,3> c;
      for (unsigned int i = 0; i < 3; i++)
      {
    c[i] = a[i] + b[i];
      }
      return c;
    }  
    
    double Angle2vecs3D(const array_1d<double,3>& a, const array_1d<double,3>& b)
    {
      double pi = 3.14159265359;
      double norm_a = Norm3D(a);
      double norm_b = Norm3D(b);
      double temp = 0.0;
      if (norm_a*norm_b > -0.00000001 && norm_a*norm_b < 0.00000001)
    temp = 0.0;
      else
    temp = DotProduct3D(a,b)/(norm_a*norm_b);
      return (acos(temp)*180.0/pi);
    }    
    
    double DotProduct3D(const array_1d<double,3>& a, const array_1d<double,3>& b)
    {
      return (a[0]*b[0] + a[1]*b[1] + a[2]*b[2]);
    }    
    
 
 
 
 
 
    std::string Info() const override
    {
        return "AssignSurfaceTensionConditions";
    }
 
    void PrintInfo(std::ostream& rOStream) const override
    {
        rOStream << "AssignSurfaceTensionConditions";
    }
 
    void PrintData(std::ostream& rOStream) const override
    {
    }
 
 
 
 
 
protected:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
private:
 
 
 
 
 
 
 
 
 
 
 
 
 
//      CalculateNormalEq& operator=(CalculateNormalEq const& rOther);
 
//      CalculateNormalEq(CalculateNormalEq const& rOther);
 
 
 
}; // Class CalculateNormalEq
 
 
 
 
 
 
inline std::istream& operator >> (std::istream& rIStream,
                                  CalculateNormalEq& rThis);
 
inline std::ostream& operator << (std::ostream& rOStream,
                                  const CalculateNormalEq& rThis)
{
    rThis.PrintInfo(rOStream);
    rOStream << std::endl;
    rThis.PrintData(rOStream);
 
    return rOStream;
}
 
 
 
}  // namespace Kratos.
 
 
#endif // KRATOS_CALCULATE_NORMAL_EQ_INCLUDED  defined