Codes to Simulate Unsteady Fluid Flows

By DE Editors

DYNAFLOW, INC. (Jessup, MD) is offering 2DYNAFS/3DYNAFS, a suite of boundary element method (BEM) based computational fluid dynamics (CFD) codes designed for the simulation of unsteady incompressible fluid flows in the presence of free surfaces.

The programs, which run in Unix and Windows environments,  handle the dynamics of single or multiple bubbles near solid boundaries or free surfaces, bubble dynamics near a submerged object and 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.

The code is designed to solve fluid flow problems involving highly nonlinear 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 BEM that is highly efficient in studying fluid flows with large boundary deformations.

3DYNAFS has recently been applied to cavitation studies on planing surfaces and propellers, and for ship / ship interaction, and surf zone modeling. It is being coupled with other general-purpose codes such as structured dynamics code DYNA3D. 2DYNAFS is an axisymmetric version of 3DYNAFS with a user-friendly GUI.

2DYNAPVF and 3DYNAPVF are postprocessing companions to 2DYNAFS and 3DYNADF that enable computations of the field pressures and velocities.

Additional configurations or customization available from DYNAFLOW, INC.

Sources: Press materials received from the company and additional information gleaned from the company’s website.