Why Am I Getting Time Step Reduced Messages in Fluent Simulations?

[ank_gl]

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

 

[baadu]

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

 

[shimigoloo]

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

 

[tunzawcn]

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.

 

[ank_gl]

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

 

[tunzawcn]

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

Not Found
The requested URL /courses/fluent/index.htm was not found on this server.


Please tell me what should I do. thanks for your helps.

 

[ank_gl]

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

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

 

[tunzawcn]

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

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

thanks for your valuable guides.

 

[tunzawcn]

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 )
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.

 

[tunzawcn]

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