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__ 1.5f
	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__ 0.3f
	The elastic bounce is not tolerating that a particle becomes closer than this distance (multiplied by \( \Delta r \)).

#define	__ELASTIC_FACTOR__ 0.0f
	The amount of kinetic energy conserved in the interaction.

Functions
__kernel void	entry (const __global int imove, const __global vec r, const __global vec normal, __global vec u, __global vec dudt, __global uint icell, __global uint *ihoc, uint N, uivec4 n_cells, float dr, float dt)
	Performs the boundary effect on the fluid particles.

Detailed Description

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

Macro Definition Documentation

◆ __DR_FACTOR__

#define __DR_FACTOR__ 1.5f

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

◆ __ELASTIC_FACTOR__

#define __ELASTIC_FACTOR__ 0.0f

The amount of kinetic energy conserved in the interaction.

A factor of 1 imply that the velocity of the particle will be preserved (except for the direction), while a factor of 0 imply that the particle will loss all its normal to the boundary velocity.

The tangential velocity is not affected.

◆ __MIN_BOUND_DIST__

#define __MIN_BOUND_DIST__ 0.3f

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

Function Documentation

◆ entry()

__kernel void entry	(	const __global int *	imove,
		const __global vec *	r,
		const __global vec *	normal,
		__global vec *	u,
		__global vec *	dudt,
		__global uint *	icell,
		__global uint *	ihoc,
		uint	N,
		uivec4	n_cells,
		float	dr,
		float	dt
	)

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 \( \mathbf{n} \).
u	Velocity \( \mathbf{u} \).
dudt	Velocity rate of change \( \left. \frac{d \mathbf{u}}{d t} \right\vert_{n+1} \).
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
dr	Distance between particles \( \Delta r \).
dt	Time step \( \Delta t \).

Macros