Cfd Definition and 117 Threads

Hi guys, I have a co-worker here who is stuck on a problem, and I cannot give him much help either. He is trying to model a multiphase flow with no inlets or outlets. The problem is essentially a rotating cylinder inside of a pipe that is sealed on both sides. Assume that the pipe is half filled...

Hi everyone My question is What is the meaning of one dimensional problem(flow)? Can one dimensional problem(flow) solve in CFD? If the answer is yes then How?

Hi everyone! Can you explain me Why always hex mesh is preffered instead of tet mesh if hex mesh is possible in perticular geometry? give brief explanation as flux point of view.

Where can i use CFD in Air comressor?

Hey everyone, When solving Navier Stokes equations for simulation, one usually has to make the velocity field divergence free and solve a sparse linear system of equations. The Poisson equation that results is usually solved using either a Pre conditioned CG method or a Multigrid method...

Hi- I was wondering if anyone could talk a little bit about the top Computational Fluid Dynamics software out there today- specifically in the aerospace industry/for applications in aerodynamics. Do they work in conjunction with CAD programs? If so, which are the leading programs (CATIA...

hi. I need some 3D CFD tutorial. Can anyone introduce some links to me besides cfd-online? And may I know how to import file from CATIA V5 into cfd? where can I find that information? Thanks.

For a research project, I am in need of CFD software. Does anybody know any relatively inexpensive, or free, software I may purchase that will help me? Thanks

There are a few threads in this forum about CFD, but I thought I'd establish one for a general discussion of CFD methods and applications and tie it in with others as appropriate. In the December '07 issue of Aerospace America in the Aerospace Sciences section is a short article on the recent...

CGNS has developed into a popular standard for the storage and exchange of CFD data in the aerospace community and is now an AIAA Recommended Practice. The use of this standard allows a compatible application or user to communicate CFD setup and information to or from other third-party CFD tools...

Simple CFD tool. "Fake CFD" Hello, I need to simulate a flowing of substance, but I needn't(and can't) do it in right (completely physical-proved) way. My system will being used as education system, so I can do some fakes in simulation process. Examples of flowing of substance\energy...

Hello all, I was wondering if anyone could help me figure out some differences between all the different types of processors out there for computers. I am a graduate student learning about CFD, and my advisor wanted me to check out some different processors because we would like to get new...

Hi, can anyone recommend me any site/books that could help me to learn the Gambit/Fluent software. Btw, what is the difference between these 2 softwares?? I am a beginner, totally alien to these softwares and I have about a month to learn it. Thanks alot.

Are there any practitioners here who could recommend something along the lines of openfoam for doing moving mesh? I've had no joy in using it but then this probably serves to illustrate my limitations more than anything

If you wanted to model a filter in an airflow using CFD, how would you go about it? I imagine that an exact model of a filter would be way too complex to model and take vast amounts of time to solve, so there must be some kind of simplification? I was thinking that maybe some known properties of...

Hi i want to know the difference b/w a good mesh and a bad mesh in gambit, pls give me suggestions and if possible a good link which gives a lot of tutorial on gambit and fluent, I am attaching a msh file which i created using gambit can anyone pls suggest what is wrong with the above mesh...

Please, can somebody help in a problem related to FD and outlined below. I need to formulate a problem for the following question: modeling of liquid flows during a process of pumping from open storages. A liquid is high viscous waste similar to highly viscous oils. It is layered waste...