ElasticBounce.cl File Reference

The simplest boundary technique to assert the non-tresspasable boundary condition. More...

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

Include dependency graph for ElasticBounce.cl:

Macros
#define	__DR_FACTOR__   0.5f
	The boundary elements effect is restricted to a quadrangular area of \( R \times R \), where \( R = DR_FACTOR \cdot \Delta r \).
#define	__MIN_BOUND_DIST__   0.0f
	The elastic bounce is not tolerating that a particle becomes closer than this distance (multiplied by \( \Delta r \)).
#define	_U_   u_i
#define	_DUDT_   dudt[i].XYZ

Functions
__kernel void	entry (const __global int *imove, const __global vec *r_in, const __global vec *normal, const __global float *m, const __global vec *u_in, __global vec *dudt, usize N, float dt, LINKLIST_LOCAL_PARAMS)
	Performs the boundary effect on the fluid particles.
__kernel void	force_bound (const __global int *imove, const __global float *m, const __global vec *dudt_preelastic, const __global vec *dudt_elastic, __global vec *force_elastic, usize N)
	Compute the force of each fluid particle on the boundary due to the elastic bounce.

Detailed Description

The simplest boundary technique to assert the non-tresspasable boundary condition.

Macro Definition Documentation

__DR_FACTOR__

#define __DR_FACTOR__   0.5f

The boundary elements effect is restricted to a quadrangular area of \( R \times R \), where \( R = DR_FACTOR \cdot \Delta r \).

__MIN_BOUND_DIST__

#define __MIN_BOUND_DIST__   0.0f

The elastic bounce is not tolerating that a particle becomes closer than this distance (multiplied by \( \Delta r \)).

_DUDT_

#define _DUDT_   dudt[i].XYZ

_U_

#define _U_   u_i

Function Documentation

entry()

__kernel void entry	(	const __global int *	imove,
		const __global vec *	r_in,
		const __global vec *	normal,
		const __global float *	m,
		const __global vec *	u_in,
		__global vec *	dudt,
		usize	N,
		float	dt,
		LINKLIST_LOCAL_PARAMS	)

Performs the boundary effect on the fluid particles.

Parameters

imove	Moving flags. imove > 0 for regular fluid particles. imove = 0 for sensors. imove < 0 for boundary elements/particles.
r	Position \( \mathbf{r} \).
normal	Normal \( \mathbf{n} \).
m	Area \( s \).
u_in	Velocity \( \mathbf{u} \).
dudt	Velocity rate of change \( \left. \frac{d \mathbf{u}}{d t} \right\vert_{n+1} \).
N	Number of particles.
dt	Time step \( \Delta t \).
icell	Cell where each particle is located.
ihoc	Head of chain for each cell (first particle found).
n_cells	Number of cells in each direction

force_bound()

__kernel void force_bound	(	const __global int *	imove,
		const __global float *	m,
		const __global vec *	dudt_preelastic,
		const __global vec *	dudt_elastic,
		__global vec *	force_elastic,
		usize	N )

Compute the force of each fluid particle on the boundary due to the elastic bounce.

Parameters

imove	Moving flags. imove > 0 for regular fluid particles. imove = 0 for sensors. imove < 0 for boundary elements/particles.
m	Mass \( m \).
dudt_preelastic	Velocity rate of change before the elastic bounce \( \left. \frac{d \mathbf{u}}{d t} \right\vert_{n+1} \).
dudt_elastic	Velocity rate of change after the elatic bounce \( \left. \frac{d \mathbf{u}}{d t} \right\vert_{n+1} \).
N	Number of particles.