Open FOAM is a free open source software;

http://openfoam.com/

Hello,

Open source Code and Software including; OpenFOAM, Sphyisic and Dual physics based on Smoothed Particle Hydrodynamic (SPH)

and among commercial software, Ansys (CFX) is a good choice

Hi Alban

I don't know much about your problem but you can go for FLUENT and COMSOL. These do quite a lot of jobs. My labmates use them albeit these are commercial and costly.

Open FOAM and Telemac

I also suggest the OpenFOAM software. I'm familiar with it more than two years and found it as the most powerful CFD software. Now let us know, what do u intend to model?

Check out the CSDMS website. They host the names, source code, and a lot of information about various software packages that are open to the public. It is a great resource.

You will find FloEFD very handy. There is a free trial version on the web.

the best one in computational fluid dynamics is FLUENT.

Hi Alban,

The answers I've seen are suitable for single phase solve problems. If you want to solve a problem two phase water-air then CFX is a very good choice (FLUENT is included in this package).

If you have to solve a problem of sediment transport, then FLOW-3D is a good choice.

advanced software with easy steps for CFD is Flow 3D you can go for that 

 Open source code , Gerris. See the pain page of Gerris for more information.

Hello, Yes

It is HEC-RAS - Hydrologic Engineering Center software.

I glad to writing a paper about coarse poruos media.

Hi,yes

hec-ras and fluent and mikes

HEC-RAS, Mike Mike 11 and 21 are not programs Computational Fluid Dynamics.

The answer is OpenFOAM: http://www.openfoam.com/

It's is a free, open source CFD software package that is superseding very expensive codes such as FLUENT.

Best regards

You could try either of the following:

OpenFoam  (open source)

starccm+ (ask for an academic licence)

CONSOL (multi purpose finite element software)

succes

regards

Francois Clemens

It depends somewhat on your problem. For free surface problems I would recommend Flow 3D. If the shape of the free surface is not a problem (either pressure flow or you can assume it fixed) go with fluent or CFX. For free I would recommend OpenFoam, but it requires some programming skills to use.

There are a lot of software which based on special issue you can use:

Flow 3D: provides a powerful tool for complex fluid modeling problems. FLOW-3D enables highly accurate simulations of free-surface flows using TruVOF, the original and true form of the Volume-of-Fluid technique.

Fluent: includes well-validated physical modeling capabilities to deliver fast, accurate results across the widest range of CFD and multi-physics applications

Delft 3D: 3D modeling suite to investigate hydrodynamics, sediment transport and morphology and water quality for fluvial, estuarine and coastal environments.

HECRAS: one-dimensional steady flow, one and two-dimensional unsteady flow calculations, sediment transport/mobile bed computations, and water temperature/water quality modeling.

Mike11: Rivers and reservoirs, Forecasting, Hydrology, Sediments, Water quality

OpeanFoam: has an extensive range of features to solve anything from complex fluid flows involving chemical reactions, turbulence and heat transfer, to acoustics, solid mechanics and electromagnetics.

Comsol: software solutions for multiphysics modeling.