Learning Forum

[tianyuan.sun]

I'm currently running a transient simulation on an HPC using Fluent in batch mode with a .jou file. The simulation runs fine and completes the time steps, but I'm encountering persistent issues with saving the animation files during the process.

Here’s my situation:

• I have set up the animation in my case file beforehand (name: velocity, storage: HSF File, record every 2 time-steps).

• I only set the HSF file saving method in my case file, but I did not set any related saving steps in the journal file. However, HPC did not save the file after the run was completed.

[Rob]

How are you launching Fluent? Ie what command other than "fluent 3ddp -t8" are you using? 

[tianyuan.sun]

Thank you for the reply!

 

/file/read-case-data /nobackup/xgjv65/FluentBench/test.cas.h5

/file/read-data      /nobackup/xgjv65/FluentBench/test.dat.h5

 

 

/define/user-defined/compiled-functions compile "libudf" yes "velocity_pi4.c" "" "" 

/define/user-defined/compiled-functions load libudf

This is my jou file code.

 

#!/bin/bash

#SBATCH -J fluent_udf_test        

#SBATCH -p shared                  

#SBATCH -n 128                    

#SBATCH --mem=48G         

#SBATCH -t 40:00:00

#SBATCH -N 1               

#SBATCH --mail-type=END,FAIL    

#SBATCH -o %x.%j.out              

#SBATCH -e %x.%j.err              

module purge

module load ansys/24.2

 

cd /nobackup/xgjv65/FluentBench

fluent 3ddp -t$SLURM_NTASKS -g -i run_twostep.jou

 

I'm using this now.

[Rob]

Read https://ansyshelp.ansys.com/public/account/secured?returnurl=/Views/Secured/corp/v252/en/flu_ug/flu_ug_BatchExecution.html and then consider what "-g" means to your animation.