Vortex_flow Class Reference

#include <speeds.h>

Inheritance diagram for Vortex_flow:

Collaboration diagram for Vortex_flow:

Public Member Functions
	Vortex_flow (double T=2)
virtual	~Vortex_flow ()
Vector_3	get_velocity (const Point_3 &p, double t) const
Public Member Functions inherited from Speed
	Speed ()
virtual	~Speed ()

Protected Member Functions
double	square (double x) const

Protected Attributes
double	_t

Detailed Description

Definition at line 69 of file speeds.h.

Constructor & Destructor Documentation

Vortex_flow ( double  T = 2 )

inlineexplicit

Definition at line 72 of file speeds.h.

: _t(T>0?T:2) {}

virtual ~Vortex_flow ( )

inlinevirtual

Definition at line 73 of file speeds.h.

{}

Member Function Documentation

Vector_3 get_velocity ( const Point_3 &  p, double  t  ) const

inlinevirtual

Reimplemented from Speed.

Definition at line 75 of file speeds.h.

References _t, cos, pi, s, sin, square(), and v.

                                                           {
    const double pi = 3.14159265358979;
    
    Vector_3 v;
    v[0] = square(std::sin(pi*p[0]))*(std::sin(2*pi*p[2])-std::sin(2*pi*p[1]));
    v[1] = square(std::sin(pi*p[1]))*(std::sin(2*pi*p[0])-std::sin(2*pi*p[2]));
    v[2] = square(std::sin(pi*p[2]))*(std::sin(2*pi*p[1])-std::sin(2*pi*p[0]));

    double s;
    if ( _t<0) s = std::cos(pi*(0.5-t/_t));
    else s = std::cos(pi*t/_t);

    return (v *= s);
  }

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double square ( double  x ) const

inlineprotected

Definition at line 91 of file speeds.h.

References x.

Referenced by get_velocity().

{ return x*x; }

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Member Data Documentation

double _t

protected

Definition at line 92 of file speeds.h.

Referenced by get_velocity().

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The documentation for this class was generated from the following file:

• speeds.h