RK4 Struct Reference

Collaboration diagram for RK4:

Public Member Functions
double	operator() (const double u, const double v, const double dt) const
double	operator() (const double u, const double v, const double dt) const

Public Attributes
RhsV	rhs_v
DRhsV_v	Drhs_v

Detailed Description

Definition at line 61 of file elec_phys_2D.cpp.

Member Function Documentation

operator()() [1/2]

double RK4::operator() ( const double  u, const double  v, const double  dt  ) const

inline

Definition at line 64 of file elec_phys_2D.cpp.

                                                                           {
    
 
    double dv;
 
    double vk = v;
 
    double err = 1;
 
    while (err > Tol){
      double rhsv = rhs_v(u, vk);
      double Drhsv = Drhs_v(u, vk);
      dv = - 1.0 / (1 - dt * Drhsv) * (vk - v - dt * rhsv);
      vk += dv;
      err = abs(dv);
    }
 
    return vk;
 
    // double k1 = dt * rhs_v(u, v);
    // // double k2 = dt * rhs_v(u, v + 0.5 * k1);
    // // double k3 = dt * rhs_v(u, v + 0.5 * k2);
    // double k4 = dt * rhs_v(u, v + k1);
    // return v + 0.5 * (k1 + k4);
  }

operator()() [2/2]

double RK4::operator() ( const double  u, const double  v, const double  dt  ) const

inline

Definition at line 45 of file elec_pys_new.cpp.

                                                                           {
    double k1 = dt * rhs_v(u, v);
    // double k2 = dt * rhs_v(u, v + 0.5 * k1);
    // double k3 = dt * rhs_v(u, v + 0.5 * k2);
    double k4 = dt * rhs_v(u, v + k1);
    return v + 0.5 * (k1 + k4);
  }

Member Data Documentation

Drhs_v

DRhsV_v RK4::Drhs_v

Definition at line 63 of file elec_phys_2D.cpp.

rhs_v

RhsV RK4::rhs_v

Definition at line 62 of file elec_phys_2D.cpp.

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The documentation for this struct was generated from the following files:

• users_modules/softmech/chemo_mech/elec_phys_2D.cpp
• users_modules/softmech/chemo_mech/elec_pys_new.cpp