Learning Forum

[smfr]

Hi,

how to prescribe an inlet velocity varying in space and time in Fluent?

any references?

Many thanks

[Keyur Kanade]

you can use udf. 

check following tutorial which has time varying udf. 

https://confluence.cornell.edu/display/SIMULATION/FLUENT+-+3D+Bifurcating+Artery

 

[smfr]

Hi,

thanks for your reply

Actually I have got variation in both space and time

Any suggestions?

[Karthik Remella]

Hello,

As mentioned by Keyur, you will need to use a UDF to do this. Please refer to Fluent Customization manual for details. There are numerous examples on how to use UDFs to pass a velocity profile to Fluent. You will need to use DEFINE_PROFILE macro for this. Here is an example from the Customization Manual.

Thank you.

Best Regards,

Karthik

[smfr]

Very much appreciated

I'll look at it

Can you confirm variation in space and variation in time can be combined in a single udf?

Many thanks

[Keyur Kanade]

yes, it can be combined in single udf.