MATHEMATICS, SIMULATION AND MODELLING

2DYNAFS/ 3DYNAFS

12 December 2008

Dynaflow

Dynaflow has released 2DYNAFS/3DYNAFS, which is a suite of boundary element method-based computational fluid dynamics (CFD) codes designed for the simulation of unsteady incompressible fluid flows in the presence of free surfaces.

The programs can handle the dynamics of single or multiple bubbles near solid boundaries, free surfaces, submerged or floating objects, bubble deformation in a non-uniform fluid flow, the dynamics of free surface waves, and generation of surface waves by a floating or submerged body motion. 

3DYNAFS has recently been applied to cavitation studies on planing surfaces and propellers, and for ship/ship interaction, and surf zone modelling. It is being coupled with other general-purpose codes such as the Mississippi State University Reynolds Averaged Navier Stokes code UNCLE and the Lawrence Livermore National Laboratories structured dynamics code DYNA3D. 2DYNAFS is an axisymmetric version of 3DYNAFS with a user-friendly graphic user interface (GUI).

The code is designed to solve fluid flow problems involving highly non-linear free surface dynamics, such as encountered in multiphase flows, ocean dynamics and time dependent interfaces separating two or more fluid phases. The program uses the boundary element method that is highly efficient in studying fluid flows with large boundary deformations.

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