Learning Forum

[Teja]

Hi all, nI would like to request you to help me for changing wind direction using UDF. I need to simulate the urban area which will have various building structures in the geometry. The domain will in rectangular shape. If I want to run a simulations for various wind directions with an interval of 5 degrees from 0 degree to 360 degrees, I need to automate the system to change the wind directions automatically and the all the simulations have to be completed.nThank you in advance for the helpnTejan

[DrAmine]

You can use input parameters either expression based or via UDF or manually. The output will be the direction vector of the wind. n

[DrAmine]

Are you working in the Workbench?n

[Teja]

Yes sir, I am working in the Workbench.n

[DrAmine]

And how are you planing to define the direction? In the workbench you can create input parameters which might be based on some other parameters say something like having 360/degree intervall and use that indirectly in Fluent n

[Teja]

In the Fluent setup, I need to specify the wind direction by changing the x and y components. At the end of the result for each wind direction, instead of changing wind direction manually, I need to automate it for all wind directions. I need to have a results for every 5 degree wind direction.nThank you sirn

[DrAmine]

You create 60 DPs in the workbench with input parameter angle. You use that angle in expressions to provide the x and y directions. n

[Teja]

Sir, I am new to do the operations you have mentioned, if you could able to provide me some examples, I can try to do sir. Thank yo so much for your patience for my silly question.nTejan

[DrAmine]

https://ansyshelp.ansys.com/account/secured?returnurl=/Views/Secured/corp/v202/en/flu_tg_workbench/flu_tg_param_workbench.htmln