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-   -   unsteady state inlet boundry condition (http://www.cfd-online.com/Forums/fluent/50719-unsteady-state-inlet-boundry-condition.html)

shubham February 28, 2009 16:23

unsteady state inlet boundry condition
 
Hi all.. in my case the inlet velocity is continuously changes with time, firstly it increases then decreases. how i give this kind of inlet boundry condition... plz help me... In advance THANKS A LOTTTTTTTTT

Usman February 28, 2009 16:53

Re: unsteady state inlet boundry condition
 
in fluent users guide see 'Defining Transient Boundary Conditions' under topic of 'Overview of Defining Boundary Conditions,

shubham March 1, 2009 01:07

Re: unsteady state inlet boundry condition
 
thanks Usman...

it helps...if i have a velocity as function of time then how i enters it?????using udf??????

mange March 1, 2009 09:34

Re: unsteady state inlet boundry condition
 
Yes, you should define it as a DEFINE_PROFILE udf and then hook it to your inlet BC. There are plenty of examples of this in the udf-manual.

have fun! /M


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