Learning Forum

[wajidthebest]

I just downloaded ansys 19.1 student version. When i'm launching Fluent application it says "Fluent application failed to start". What to do?

[tsiriaks]

Hi wajidthebest,

One of the most common causes of this issue is graphics.

Please try running Fluent in non-graphic mode by using this command in the CMD Prompt (change your installation directory accordingly)

"C:Program FilesANSYS IncANSYS Studentv191fluentntbinwin64fluent.exe" ^-r19.1.0 3d -g -meshing

Does this work ? If so, you have issue with graphics. If not, this is something else, please attach the screenshot of the error that you see here.

Thank you,

Win

[wajidthebest]

Yeah i tried that but it's still not working. Ends up with the same "Fluent application failed to start."

[tsiriaks]

Hi wajidthebest,

That command was to try running Fluent in non-graphic mode to identify if graphics is the issue. It's not intended to fix the issue that you currently have.

From the screenshots that you sent, it seems both modes have the same issue that it got stuck when it's trying to spawn processes.

Let's try to rule out another issue.

In Fluent launcher (either launch from shortcut or run this command "C:Program FilesANSYS IncANSYS Studentv191fluentntbinwin64fluent.exe"  , with quote)

try this setting

Processing Options : Parallel (Local Machine)

Processes : 0

GPGPUs per Machine : None

Can you launch successfully with this setting ? If so, something on your systems prevent you from spawning multiple processes. Check your security/anti-virus software.

Thank you,

Win

 

 

[wajidthebest]

Yes i'm able to launch Fluent with above mentioned instructions. But it still ends with with same dialogue box "The fluid application failed to start". Only difference is that it shows toolbar options on left pane.

[tsiriaks]

Hi wajidthebest,

Fluent actually launches successfully now. The issue is something else.

Have you tried with different geometry/model/mesh ? Can you start a test Workbench project, create a simple block in SpaceClaim , then use generate mesh and try open up the setup cell again.

If that doesn't work, close all ANSYS applications, then rename folder v191 in this directory 

%AppData%Ansys     (please copy and paste this in the Windows Explorer address bar)

to anything else (e.g., v191.old)

and try with test project again.

 

Thank you,

Win

[wajidthebest]

Still not working

[Rob]

Fluent looks to have started, but isn't reading the mesh. Just to confirm you have a 3d mesh and not a shell?  Can you open any of the tutorials available via the Help system?

[vighnesh]

Hello there,

I am facing similar issue on Ansys version 19.2 (Fluent).Geometry,meshing works fine only setup file doesn't start but pops up with an error window saying "The FLUENT application failed to start".

Regards,

Vighnesh

[Rob]

If you create a new Fluent workflow can you open Fluent then?  

[vighnesh]

No..same window pops up.

[vighnesh]

[Rob]

Drag a Fluent component onto the Workbench system and do NOT connect to anything else. Will that open?  Just want to double check it's not your mesh: what are the messages?

[vighnesh]

Still it doesn't open. pops up same thing. Opened new workbench 2019 R2--->drag and drop fluid flow (fluent)-->double click on setup-->Ok on launcher ( no changes done- 2d,serial,double precision).

[vighnesh]

Finally it is working now. Initially uninstalled Ansys--> reinstalled again-> tried to run the setup file. Pops up same error message. Later again uninstalled Ansys--> cleared cache files --> restarted windows--> Installed Ansys again. Working fine just FYI.