Learning Forum

[yaolong1302091233]

Hi everyone, I'm having problems using FLUENT f, UDF dynamic mesh + MIXTURE, and when I run it, I often get a mistake
Updating solution at time levels N and N-1.
Updating solution at time levels N and N-1. done.

Updating mesh at time level N...
set_part_dest_tree: cell not found on myid = 7.(Fig.2)

This makes the calculation impossible and I have to proceed from the latest saved transient casdat file, which is obviously frustrating, I would like to know the reason for the error and a possible solution, is it related to the parallel core settings, when I open Flunet to work on it, I always get the message, Process affinity not being set (Fig.3)? I am using 50 cores double precision for simulation work. From the iteration curve(Fig.1), i dont think it is a mesh problem or model issue. hope you guys can answer my query, thanks!

[Rob]

Mixture model and moving mesh should work fine, so chances are there's something in the set up that needs some attention. What does the UDF do, and what is moving? 

Also, is there a reason you're not using 2024R2? 

 

[yaolong1302091233]

Thanks for your reply, I am working with a 2022R2, the blades are in rotational motion and the UDF file is as follows.
((waice transient 3 0)
(time 0 1 60000)
(omega_z 6.3 6.3 6.3 6.3)))
Also I have a new question I want to communicate with you, why after this error, I restarted the calculation, the subsequent animations do not correspond to the contour I set up, such as animation 1 should correspond to contour1, but he generated the animation on contour2, but when I clicked on the preview in the animation settings he corresponded to contour1 indeed!

[Rob]

That's a profile, not a UDF. You may want to check the quantity of the omega numbers (ie how many are set). 

The animation could be a setting error in the panel, but more likely it's recording the wrong window. Check how you've defined everything, but welcome to the wider club: we've got far too many movies of residuals after similar mishaps.