Interactions.cl File Reference

Particles interactions computation. More...

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

Include dependency graph for Interactions.cl:

Macros
#define	__CLEARY__   10.f
#define	_GRADP_   grad_p[i].XYZ
#define	_LAPU_   lap_u[i].XYZ
#define	_DIVU_   div_u[i]
#define	_SHEPARD_   shepard[i]

Functions
__kernel void	entry (const __global int *imove, const __global int *imirrored, const __global vec *r, const __global vec *rmirrored, const __global vec *u, const __global vec *umirrored, const __global float *rho, const __global float *m, const __global float *p, __global vec *grad_p, __global vec *lap_u, __global float *div_u, __global float *shepard, __global uint *icell, __global uint *ihoc, uint N, uivec4 n_cells)
	Particles interactions computation.

Detailed Description

Particles interactions computation.

Macro Definition Documentation

__CLEARY__

#define __CLEARY__   10.f

_DIVU_

#define _DIVU_   div_u[i]

_GRADP_

#define _GRADP_   grad_p[i].XYZ

_LAPU_

#define _LAPU_   lap_u[i].XYZ

_SHEPARD_

#define _SHEPARD_   shepard[i]

Function Documentation

entry()

__kernel void entry	(	const __global int *	imove,
		const __global int *	imirrored,
		const __global vec *	r,
		const __global vec *	rmirrored,
		const __global vec *	u,
		const __global vec *	umirrored,
		const __global float *	rho,
		const __global float *	m,
		const __global float *	p,
		__global vec *	grad_p,
		__global vec *	lap_u,
		__global float *	div_u,
		__global float *	shepard,
		__global uint *	icell,
		__global uint *	ihoc,
		uint	N,
		uivec4	n_cells
	)

Particles interactions computation.

Compute the rates of variation due to the fluid (fixed particles will be included here).

During this stage some other operations are performed as well, like the values interpolation in the boundaries (for DeLeffe boundary conditions), the sensors meassurement, or the Shepard factor computation.

Parameters

imove	Moving flags. imove > 0 for regular fluid particles. imove = 0 for sensors. imove < 0 for boundary elements/particles.
imirrored	0 if the particle has not been mirrored, 1 otherwise.
r	Position \( \mathbf{r} \).
rmirrored	Mirrored position of the particle, r if imirrored is false (0).
u	Velocity \( \mathbf{u} \).
umirrored	Mirrored velocity of the particle, u if imirrored is false (0).
rho	Density \( \rho \).
m	Mass \( m \).
p	Pressure \( p \).
grad_p	Pressure gradient \( \frac{\nabla p}{rho} \).
lap_u	Velocity laplacian \( \frac{\Delta \mathbf{u}}{rho} \).
div_u	Velocity divergence \( \rho \nabla \cdot \mathbf{u} \).
shepard	Shepard term \( \gamma(\mathbf{x}) = \int_{\Omega} W(\mathbf{y} - \mathbf{x}) \mathrm{d}\mathbf{x} \).
icell	Cell where each particle is located.
ihoc	Head of chain for each cell (first particle found).
N	Number of particles.
n_cells	Number of cells in each direction

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