Learning Forum

[qjaxod13]

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 (24R2), I cannot find init-instantaneous-vel under the /solve/initialize menu.

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

Thank you in advance for your assistance.

[Rob]

I suspect you just switch model and it'll pick up the relevent field values - just checking with a colleague. 

[Rob]

OK, the TUI (and back end maths) has been revised. Save case & data before using the TUI command as you can't change back. 

/solve/init-turb-vel-fluctuations 

should be the equivalent. 

[qjaxod13]

I finally solved it! Thank you so much! Have a great day! :)

[455266651]

May I ask how you solved it? I had the same problem. My version is ansys2024R1.There is no such command in /slove and /slove/initialize.

[Rob]

https://innovationspace.ansys.com/forum/forums/topic/inquiry-regarding-les-initialization-in-fluent-24r1/