# 3d analysis in gambit & fluent

• ank_gl
Your problem is that you are trying to use a finite element method on a transient problem. A finite element method is not going to be able to solve for the time step reductions that you are seeing. A better way to solve this problem would be to use a discretization scheme that is more suited to the type of problem that you are trying to solve.f

#### ank_gl

cud anyone please gimme some links for tutorials for airflow over 3d geometry in gambit(for meshing) & fluent (for analysis)...

Try registering in the fluent website...They provide a lot of free tutorials...

in cornell university, there are some tutorials files.this is the link:
http://instruct1.cit.cornell.edu/courses/fluent/index.htm#HOWTO [Broken]

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cud anyone please gimme some links for tutorials for airflow over 3d geometry in gambit(for meshing) & fluent (for analysis)...

i m also studying GAMBIT and FLUENT. If you know how to construct 3D nozzle, please share me. thanks for your help.

do try the link in post3, they ll give some feel of working with CFD.

Documentation & tutorial files of fluent are also a good source to kick start

do try the link in post3, they ll give some feel of working with CFD.

I don't know what's wrong with that link. I can't try. when I enter that link, it shows me like this

try this, it works
http://courses.cit.cornell.edu/fluent/index.htm [Broken]

I am reading this book, Finite Element Analysis Theory and Applications with ANSYS - Saeed Moaveni, it is nice. Try to get hold of some similar book from your library

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try this, it works
http://courses.cit.cornell.edu/fluent/index.htm [Broken]

I am reading this book, Finite Element Analysis Theory and Applications with ANSYS - Saeed Moaveni, it is nice. Try to get hold of some similar book from your library

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I got a data file (http://rapidshare.com/files/172642046/vert.dat) from the example of compressible flow in a nozzle (http://courses.cit.cornell.edu/fluent/index.htm [Broken])
It works for GAMBIT. But I am facing with a problem. My problem is : I don't know how to create this type of file by myself. So, please guide me which type of software I should use to create this file type.

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Hi
I am running a simulation of 3D nozzle flow with the following information: Density based implicit solver, Inviscid Flow model, Ideal gas flow, operating pressure=0, Pressure inlet boundary, pressure outlet boundary...after some iteration ,I am getting "time step reduced in 1 cells" , after getting this message, iteration still continue and I get again " time step reduced in 4 cells"...please let me know why I get this message and how to solve this problem.

Thanks
tunzawcn