How to run fluent in LINUX
 

Hi...

I have recently installed fluent in linux. But I am unable to start it. The error message given is:

"bash: fluent: command not found"

Any help given is greatly appreciated. Thanks

Selina

Re: How to run fluent in LINUX
 

Try : in the shell window ;

>module load fluent

>fluent

All the best, Sri.

Re: How to run fluent in LINUX
 

bash uses an "envirnoment variable" called PATH to tell it where to look for programs.

If you type: echo $PATH it will give you a list of directories (seperated by colons) if the list does not include the directory you installed fluent, then you will need to add it, by typing

PATH=/opt/pkg/Fluent.inc/bin:$PATH

(note this is assuming fluent is installed in /opt/pkg/Fluent.inc/ )

This just works for your current terminal, if you want to make it permenant, you will have to add it to a hidden file called .bashrc

Rob

Re: How to run fluent in LINUX
 

In the fluent installation guide it says you have to alter the .bash_profile (hidden) file by adding the following lines

PATH=/fluent6/Fluent.Inc/bin:$PATH export PATH

Assuming fluent is installed in dir /fluent6. That works for me and I am running RedHat 9.

Re: How to run fluent in LINUX
 

On SuSE Linux 9 and 9.1, you have to add the following lines to the hidden file /home/.bashrc

PATH=<path-to-FLUENT.INC-directory>/Fluent.inc/bin:$PATH export PATH

The same settings works for GAMBIT too.

This makes settings permanent for the user the .bashrc file belongs to.

Hi :)

ap

Re: How to run fluent in LINUX
 

BTW, If you want everybody to be able to use fluent, then it's easier to put it in /etc/profile

Re: How to run fluent in LINUX
 

Yes, but in such a case, it is better to use /etc/profile.local instead of changing /etc/profile because there are chances that the changes to /etc/profile will be lost during system upgrades.

Hi :)

ap

Re: How to run fluent in LINUX
 

Real linux distributions don't overwrite configuration files. Besides, I imagine if your system makes use of a /etc/profile.local, there's probably (or should be) a comment at the top of /etc/profile telling you to go change that instead!

Rob

Re: How to run fluent in LINUX
 

Yes, there's the comment of course.

My comment is referred to SuSE Linux, which is what I use (and cited in my previous post) and which uses the /etc/profile.local file.

P.S. Real linux distributions? Are there virtual ones? I just know there are usable distributions and unusable ones ;-)

Hi :)

ap

Re: How to run fluent in LINUX
 

lol.

It was just a joke, but maybe quite a cultural one. I know not everybody who reads this is English... sorry

For the record, I use debian.

:)

Rob

Re: How to run fluent in LINUX
 

:-D

ap

Re: How to run fluent in LINUX
 

Hi Rob,Sri,Andrew, ap,

Thanks for all the help and suggestions given. I have managed to get Fluent to work in RHL9. Very grateful.

Seriously, you guys are better at providing technical support than FLUENT.

Thanks again!!!! Selina

Hi Rob, I reckon you might be of great help to me.

I am newer at using Fluent on Red Hat.

I have just installed it but don't manage to make it work.

Once I have installed it and am in the folder /home/iroldanb/Fluent.Inc/fluent6.3.26/bin I type fluent 3d and nothing worked, it said:

bash: fluent: command not found

Then I did this in that very folder:

$ FLUENT_ARCH=lnx86
$ export FLUENT_ARCH

and when typing again to run fluent I get the same error.

Then I did what Andrew suggests above here, in the folder /home/iroldanb/Fluent.Inc/bin I type

PATH=/home/iroldanb//Fluent.Inc/bin:$PATH export PATH

and back to the executable fluent is, if I type once more fluent 3d the error I get is:

Error: directory /home/iroldanb/Fluent.Inc/fluent6.3.26/fluent[0-9]* does not contain a valid arch.
Set the environment variable FLUENT_ARCH and try again.

I'm sure I'm doing something silly.

Any help?

Thanks a lot beforehand.

Regards,

Ivan.

Hello,

I have a similar problem:

[root@server bin]# uname -a
Linux server 2.6.18-164.10.1.el5 #1 SMP Wed Dec 30 18:35:28 EST 2009 x86_64 x86_64 x86_64 GNU/Linux

[root@server bin]# echo $FLUENT_ARCH
lnamd64

[root@server bin]# ./fluent
Error: directory /ansys_inc/v130/fluent/fluent13.0.0/fluent[0-9]* does not contain a valid arch.
Set the environment variable FLUENT_ARCH and try again.


[root@serv fluent13.0.0]# pwd
/ansys_inc/v130/fluent/fluent13.0.0
[root@serv fluent13.0.0]# ls
addons client cpropep ic3m isat launcher lnamd64 packages src vki
bin cortex gtpower info KINetics lib multiport realgas tgrid wave

Any solution? I don't know what to do :-(

I am afraid to say I gave up on it.

Much appreciate it if someone comes across with a reliable solution.

Cheers,

Ivan.

Thanks for answering. I've opened a SR in ANSYS Customer Portal. Let's see if they can help me :)

Solution:

[root@server]# cd /ansys_inc/v130/fluent/bin/
[root@server]# ./fluent


That's the proper route, nor the other :D

/ansys_inc/v130/fluent/fluent13.0.0

I hope it works for you

Hi IvanCFD,

Did you solve the problem? The last solution given didn't work for me.

Any help would be really appreciated!

Paola,

You need to first know where you have installed Fluent. If you don't know, open a terminal window and type:
This will give you a bunch of files where fluent is installed. Find the one that looks something like: ....../ansys/13.0/v130/fluent/fluent13.0.0/bin/fluent. The last 2 directories "bin/fluent" will be identical. The rest of it may be different depending on your version.

This file bin/fluent is the launcher. The easiest way to launch is by first nothing the path to "bin/fluent", and then typing in the terminal: (substituting your own path for mine)
Stu

Thank you for the quick answer, stuart, I finally solved the problem!

In case it may help other people:

First, my computer has an architecture: x86_64 (you can see it with "uname -m" command). So I had to set the variable FLUENT_ARCH equal to lnx86, the best thing is to add this line to file .bashrc:
FLUENT_ARCH=lnx86 export FLUENT_ARCH

Second thing was that I have to launch ./fluent from this directory: ../Fluent.Inc/bin/
(instead of this ../Fluent.Inc/fluent6.3.26/bin/). I can also be added to .bashrc:

alias fluent='(personal_path)/Fluent.Inc/bin/fluent'

I'm really glad I found this forum. Best!

fluent for linux 64 bit
 

please put fluent link for linux 64 bit thanks very much

[QUOTE=Paola;322945First, my computer has an architecture: x86_64 (you can see it with "uname -m" command). So I had to set the variable FLUENT_ARCH equal to lnx86...[/QUOTE]
On my home computer:
x86_64
and it is 64-bit system.
I use FLUENT_ARCH=lnamd64
because of FLUENT_ARCH is FLUENT architecture, not architecture of the system!
And u use FLUENT_ARCH=lnx86 because you have x86 fluent package.

Tuning Ubuntu (64-bit) to run Fluent 6.3.26
link:
http://www.cfd-online.com/Forums/flu...64-bit.html#20

Oh! That was why I was all mess up at the begining :)

Ok, so is it a Fluent with a lnx86 architecture appropiated for my system 64bit?

Thank you, villager!

:) I think so)
I run Gambit 2.3 x86 with FLUENT_ARCH=lnx86 and Fluent 6.3 with FLUENT_ARCH=lnamd64 on my amd64. I think,if somebody use Intel x64 processors, he must specify FLUENT_ARCH=lnia64.
You can run x86 programms in 64-bit system, but you cant't run 64-bit programms in 32-bit system.
:) So, when you buying (or downloading) fluent, check its version to be compatible with your computer.

In addition...
 

No, lnia64 option is only for Itanium processors, and lnamd64 for both Intel and Amd processors.

Thanks. This was really helpful.

Hi There I am using Fluent in Linux and am using .jou file with following commands;

file read-case file name.cas
file read-data file name.dat
file auto-save data-frequency 0
solve update-physical-time
file auto-save data-frequency 100
solve dual-time-iterate 500 50
file write-case end-file name-1.cas
file write-data end-file name-1.dat
exit
yes

There is an error in the above mention code because I could save data files at every 100 intervals.

Can anyone help me with this?