SSIIM

Abstract

SSIIM is an abbreviation for Sediment Simulation In Intakes with Multiblock option. The program is made for use in River/Environmental/Hydraulic/Sedimentation Engineering. The main motivation for the program is to simulate the sediment movements in general river/channel geometries. This has shown to be difficult to do in physical model studies for fine sediments. The program solves the Navier-Stokes equations with the k-epsilon model on a three-dimensional almost general non-orthogonal grid. The grid is structured. A control volume method is used for the discretization, together with the power-law scheme or the second order upwind scheme. The SIMPLE method is used for the pressure coupling. The solution is implicit, also over the boundary of the different blocks. This gives the velocity field in the geometry. The velocities are used when solving the convection-diffusion equations for different sediment sizes. This gives trap efficiency and sediment deposition pattern. The model has a user interface with capabilities of presenting graphical plots of velocity vectors and scalar variables. The plots show a two-dimensional view of the three- dimensional grid. Three plots showing the geometry from above, in a cross-section and in a longitudinal profile

DateOfInformation

Thr Sep 25 16:26:02 1997

Domain

Scientific and Engineering Applications

Name

SSIIM

TargetEnvironment

e program runs only under OS/2 2.x.

Webpage

ftp://ugle.unit.no/pub/os2/ssiim/

ContactIs

Nils Reidar Olsen