- #1
ank_gl
- 741
- 0
cud anyone please gimme some links for tutorials for airflow over 3d geometry in gambit(for meshing) & fluent (for analysis)...
Why Am I Getting Time Step Reduced Messages in Fluent Simulations?
Click For Summary
Discussion Overview
The discussion revolves around seeking help with tutorials for airflow simulations over 3D geometries using GAMBIT for meshing and FLUENT for analysis. Participants also address a specific issue related to receiving "time step reduced" messages during a simulation of 3D nozzle flow.
Discussion Character
- Homework-related
- Technical explanation
- Debate/contested
Main Points Raised
- Some participants request links to tutorials for using GAMBIT and FLUENT for 3D airflow simulations.
- Others suggest registering on the FLUENT website for free tutorials and provide links to specific tutorial resources.
- One participant mentions a specific link to Cornell University's tutorial files, although another participant reports that the link is broken.
- There are suggestions to refer to documentation and tutorial files of FLUENT as useful resources.
- A participant shares a data file related to compressible flow in a nozzle and asks for guidance on how to create similar files.
- A specific issue is raised regarding a simulation of a 3D nozzle flow where the participant receives "time step reduced" messages during iterations, prompting a request for explanations and solutions.
Areas of Agreement / Disagreement
Participants generally agree on the need for tutorials and resources for GAMBIT and FLUENT, but there is disagreement regarding the availability and functionality of specific links. The issue of "time step reduced" messages in simulations remains unresolved, with no consensus on the cause or solution.
Contextual Notes
Some participants express uncertainty about the effectiveness of provided links, and there is a lack of clarity on how to resolve the "time step reduced" issue in the simulation. The discussion does not provide a definitive solution to the problem raised.
Who May Find This Useful
Individuals interested in computational fluid dynamics (CFD), particularly those using GAMBIT and FLUENT for simulations, may find this discussion relevant.
- #2
baadu
- 2
- 0
Try registering in the fluent website...They provide a lot of free tutorials...
- #3
shimigoloo
- 2
- 0
in cornell university, there are some tutorials files.this is the link:
http://instruct1.cit.cornell.edu/courses/fluent/index.htm#HOWTO
http://instruct1.cit.cornell.edu/courses/fluent/index.htm#HOWTO
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- #4
tunzawcn
- 7
- 0
ank_gl said: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.
- #5
ank_gl
- 741
- 0
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
Documentation & tutorial files of fluent are also a good source to kick start
- #6
tunzawcn
- 7
- 0
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.
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.
- #7
ank_gl
- 741
- 0
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
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
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- #8
tunzawcn
- 7
- 0
ank_gl said:
thanks for your valuable guides.
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- #9
tunzawcn
- 7
- 0
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.
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.
Last edited by a moderator:
- #10
tunzawcn
- 7
- 0
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
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
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