Learning Forum

[455266651]

Hello,

I am a graduate student who primarily uses Ansys FLUENT.

I would like to conduct an LES simulation.

Based on publicly available materials I found on Google (Quick Guide to Setting Up LES-type simulations, Version 1.4, May 2016), I would like to initialize my LES simulation using RANS steady-state results.

According to the reference, the following TUI command can be used for this setup: /solve/initialize/init-instantaneous-vel

However, in the version of FLUENT I am using (24R1), I cannot find init-instantaneous-vel under the /solve/initialize menu.

Check the related post, the new version is updated to /solve/init-turb-vel-fluctuations , but I have not yet found it.

Could you please explain how I can perform unsteady initialization in this case?

Thank you in advance for your assistance.

[Rob]

Can you check you've got LES set? If you're still using a RANS model the menu's may not be available. 

[455266651]

I found that my command was disabled. Why is that?

[455266651]

There is no such command in LES or RANS

[Rob]

What models are on, and how well converged is the flow?