Volume of Fluid advection

Name

Volume of Fluid advection --

Synopsis

#include <gfs.h>


gdouble             gfs_plane_alpha                     (const FttVector *m,
                                                         gdouble c);
gdouble             gfs_plane_volume                    (const FttVector *m,
                                                         gdouble alpha);
gdouble             gfs_line_alpha                      (const FttVector *m,
                                                         gdouble c);
gdouble             gfs_line_area                       (const FttVector *m,
                                                         gdouble alpha);
void                gfs_line_center                     (const FttVector *m,
                                                         gdouble alpha,
                                                         gdouble a,
                                                         FttVector *p);
void                gfs_tracer_vof_advection            (GfsDomain *domain,
                                                         GfsAdvectionParams *par);

Description

Details

gfs_plane_alpha ()

gdouble             gfs_plane_alpha                     (const FttVector *m,
                                                         gdouble c);

`m` :	a FttVector.
`c` :	a volume fraction.
Returns :	the value `alpha` such that the volume of a cubic cell lying under the plane defined by `m`.`x` = `alpha` is equal to `c`.

gfs_plane_volume ()

gdouble             gfs_plane_volume                    (const FttVector *m,
                                                         gdouble alpha);

`m` :	normal to the plane.
`alpha` :	plane constant.
Returns :	the volume of a cell lying under the plane (`m`,`alpha`).

gfs_line_alpha ()

gdouble             gfs_line_alpha                      (const FttVector *m,
                                                         gdouble c);

`m` :	a FttVector.
`c` :	a volume fraction.
Returns :	the value `alpha` such that the area of a square cell lying under the line defined by `m`.`x` = `alpha` is equal to `c`.

gfs_line_area ()

gdouble             gfs_line_area                       (const FttVector *m,
                                                         gdouble alpha);

`m` :	normal to the line.
`alpha` :	line constant.
Returns :	the area of the fraction of a cell lying under the line (`m`,`alpha`).

gfs_line_center ()

void                gfs_line_center                     (const FttVector *m,
                                                         gdouble alpha,
                                                         gdouble a,
                                                         FttVector *p);

Fills p with the position of the center of mass of the fraction of a square cell lying under the line (m,alpha).

`m` :	normal to the line.
`alpha` :	line constant.
`a` :	area of cell fraction.
`p` :	a FttVector.

gfs_tracer_vof_advection ()

void                gfs_tracer_vof_advection            (GfsDomain *domain,
                                                         GfsAdvectionParams *par);

Advects the v field of par using the current face-centered (MAC) velocity field.

`domain` :	a GfsDomain.
`par` :	the advection parameters.