| ATTRIBUTE | VALUE |
|---|
| type | A |
| database id | 8560 |
| title | On the SPH approximations in modeling water waves |
| authors | Szmidt K.1 |
| affiliations | |
| pages | 63 — 86 |
| full text link | http://www.ibwpan.gda.pl/storage/app/media/ahem/ahem60str063.pdf |
| keywords | water wave, SPH modeling, consistency, kernel correction |
| abstracts | This paper presents an examination of approximation aspects of the Smoothed Particle
Hydrodynamics (SPH) in modeling the water wave phenomenon. Close attention is paid on
consistency of the SPH formulation and its relation with a correction technique applied to improve
the method accuracy. The considerations are confined to flow fields within finite domains with
a free surface and fixed solid boundaries with free slip boundary conditions. In spite of a wide
application of the SPH method in fluid mechanics, the appropriate modeling of the boundaries
is still not clear. For solid straight line boundaries, a natural way is to use additional (virtual,
ghost) particles outside the boundary and take into account mirror reflection of associated field
variables. Such a method leads to good results, except for a vicinity of solid horizontal bottoms
where, because of the SPH approximations in the description of pressure, a stratification of the
fluid material particles may occur. In order to illustrate the last phenomenon, some numerical
tests have been made. These numerical experiments show that the solid fluid bottom attracts
the material particles and thus, to prevent these particles from penetration into the bottom,
a mutual exchange of positions of real and ghost particles has been used in a computation
procedure. |
| attributes | [reviewed] [scientific] |
| language | en |
| points | 6 |
| PART OF |
|---|
| type | C |
| database id | 8468 |
| year | 2013 |
| series | Archives of Hydro-Engineering and Environmental Mechanics |
| issue | Vol. 60, No. 1-4 |
| publisher | Wydawnictwo IBW PAN |
| place | Gdańsk |