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#1 |
Member
Sunag R A
Join Date: Jul 2019
Location: Bangalore, India
Posts: 82
Rep Power: 7 ![]() |
Dear All,
I am running some simulations in fluent in a single 16 processor Computer. I want to know how to run simulation in background via the command line through cygwin interface in windows 10. I have some experience in running background simulation for Converge CFD software and not with Fluent. I came through this article while checking for Fluent. https://www.me.psu.edu/cimbala/learn...background.htm. With respect to this, I have created case and data file for every frequent iterations using autosave option in fluent. 1. I want to know how to enable fluent in cygwin? If not cygwin, how to run fluent in background without graphical interface as said in above article. ( I haven't tried running in cmd). 2. What settings need to be done in fluent parallel setup before running the simulation? Is there any MPI setting to be done. ? 3. Is the journal file in the article correct? If not, how it should be written ? Please help me out with this as it will save a lot of time and will also help me understand running ansys fluent in a computational way. Thanks and Regards, Sunag R A. |
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#2 |
Senior Member
Svetlana Tkachenko
Join Date: Oct 2013
Location: Australia, Sydney
Posts: 415
Rep Power: 14 ![]() |
in cmd I think fluent.exe may have '-g' option just like it does when I run it at a high performance computing facility on a Linux
the parallelization is done via the '-t' option again see https://www.sharcnet.ca/Software/Ans...up_option.html (check this for your version, this is for 16.2.3) and other examples like https://docs.pace.gatech.edu/software/fluent/ journal file looks correct |
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#3 |
Senior Member
Alexander
Join Date: Apr 2013
Posts: 2,363
Rep Power: 34 ![]() ![]() |
google fluent batch mode
you don't need to save case data files on each iteration (timestep) it's up to you. best regards |
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#4 |
Member
Sunag R A
Join Date: Jul 2019
Location: Bangalore, India
Posts: 82
Rep Power: 7 ![]() |
Thank you very much for your reply. I understood the working method. But I am not able to start fluent in cmd or cygwin. It shows the following error:
'fluent' is not recognized as an internal or external command, operable program or batch file. What I understood from this is that fluent in not installed in the cmd. How do I go with this? I tried searching for this, But i am unable to find a solution. Once I get fluent working in cmd, I think I can run with commands given in the articles shared by you. Also, If you know the same working installation in cygwin, it would be helpful. Thanks and Regards, Sunag R A. |
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#5 |
Senior Member
Alexander
Join Date: Apr 2013
Posts: 2,363
Rep Power: 34 ![]() ![]() |
1. you need to define windows environment variable PATH = path to fluent
or 2. to to your working folder, save there case file manually, than you can execute not fluent, but this case file best regards |
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#6 |
Member
Sunag R A
Join Date: Jul 2019
Location: Bangalore, India
Posts: 82
Rep Power: 7 ![]() |
Hi,
I tried putting fluent path folder to PATH of Environment variables. But, the commands are still not working. The below is the fluent path. I have installed Ansys in E drive so is this the correct path for fluent in Environment variables? E:\Program Files\ANSYS Inc\v181\fluent\bin Please help me out with this. Thanks and Regards, Sunag R A. |
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#7 |
Senior Member
Alexander
Join Date: Apr 2013
Posts: 2,363
Rep Power: 34 ![]() ![]() |
probably
Code:
E:\Program Files\ANSYS Inc\v181\fluent\ntbin\win64 best regards |
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#8 |
Member
Sunag R A
Join Date: Jul 2019
Location: Bangalore, India
Posts: 82
Rep Power: 7 ![]() |
The environment variable is working perfectly even for Cygwin. Thank you very much for the support.
Regards, Sunag R A. |
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Tags |
cygwin, fluent - parallel, fluent - udf |
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