Forces.cl File Reference

OpenCL tool to compute the fluid global force and moment. More...

#include "resources/Scripts/types/types.h"

Include dependency graph for Forces.cl:

Functions
__kernel void	entry (__global vec *forces_f, __global vec4 *forces_m, __global int *imove, __global vec *r, __global vec *dudt, __global float *m, usize N, vec g, vec forces_r)
	Tool to compute the force and moment of each particle.

Detailed Description

OpenCL tool to compute the fluid global force and moment.

Function Documentation

entry()

__kernel void entry	(	__global vec *	forces_f,
		__global vec4 *	forces_m,
		__global int *	imove,
		__global vec *	r,
		__global vec *	dudt,
		__global float *	m,
		usize	N,
		vec	g,
		vec	forces_r )

Tool to compute the force and moment of each particle.

In this approach, since the global force and motion is looked for, the force is computed as: \($ f_a = - m_a \cdot \left( \frac{d \mathbf{u}}{d t} - \mathbf{g} \right) \)$ And the moment as: \($ f_a = - m_a \cdot \mathbf{r}_0 \times \left( \frac{d \mathbf{u}}{d t} - \mathbf{g} \right) \)$

Parameters

forces_f	Force of each particle to be computed [N].
forces_m	Moment of each particle to be computed [N \( \cdot \) m].
imove	Moving flags. imove > 0 for regular fluid particles. imove = 0 for sensors. imove < 0 for boundary elements/particles.
r	Position \( \mathbf{r} \).
dudt	Velocity rate of change \( \frac{d \mathbf{u}}{d t} \).
m	Mass \( m \).
N	Number of particles.
g	Gravity acceleration \( \mathbf{g} \).
forces_r	Point with respect the moments are computed \( \mathbf{r}_0 \).