ANSYS 19.2 R2 FLUENT opens and hangs and sometimes doesnt open at all

- July 16, 2019 at 7:03 pm
  
  helpme
  Subscriber
  
  While using workbench in Fluid Flow(fluent) , Fluent doesn't open or hangs upon opening
- July 16, 2019 at 9:17 pm
  
  tsiriaks
  Ansys Employee
  
  This seems to be stuck while it's trying to launch MPI processes.
  
  Checkout suggestions in this thread
  
  https://forum.ansys.com/forums/topic/fluent-application-failed-to-start-2/?
- July 17, 2019 at 12:36 am
  
  helpme
  Subscriber
  
  i tried those methods, but they didnt work i keep getting this message at the end
  
  Host spawning Node 0 on machine "DESKTOP-3F5U06C" (win64).
  
  WARNING: No cached password or password provided.
  
  use '-pass' or '-cache' to provide password
- July 17, 2019 at 1:56 am
  
  tsiriaks
  Ansys Employee
  
  What if you open CMD Prompt, then use the following command
  
  "%awp_root194%fluentntbinwin64fluent.exe" -r19.4.0 3d -t0
- July 17, 2019 at 6:32 am
  
  helpme
  Subscriber
  
  It opens fluent, but when i try to import a .msh file it gives the following error
  
  Reading "| utility fl42seg CUsers/Ryan Pereira/Desktop/nh.msh"...
  
  Building...
  
  mesh
  
  Error: Null Domain Pointer
  
  Error: Null Domain Pointern
  
  Error Object: #f
- July 17, 2019 at 4:27 pm
  
  tsiriaks
  Ansys Employee
  
  This command
  
  "%awp_root194%fluentntbinwin64fluent.exe" -r19.4.0 3d -t0
  
  is equivalent to you setting
  
  Processing Options : Parallel
  
  Processes : 0
  
  in the Fluent Launcher, which I stated in the thread above. The issue that prevents you from using multiple cores (MPI) is as described in that thread as well. You have to find on your machine what is blocking those processes , e.g., anti-virus , Firewall, VPN, etc.
  
  The issue about importing mesh is a different one. It's best to get help about this issue from Physics Simulation -> Fluid Dynamics section.

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