incorrect flow pattern
 

hello,

I am simulating a pulsating flow through a pipe. I am using a udf file for the pressure. When I run the display --> pathlines to see the flow pattern it is pulsating but the flow starts at two different points; in the middle and at the right side (inlet). I would like it to be pulsating from just the inlet.

Dear ppa
I hope you have solved your problem, I am facing the same problem but from the very beginning stage.
Can you kindly answer the following questions for me
· How do you simulate a pulsating flow using pressure gradient through a simple pipe
· What is the UDF file
I am really in a big need for you answer, and is very much appricated
Ibo

You have to write a UDF file using DEFINE_PROFILE; Within in this UDF is a written c-program to tell fluent how to distribute the pressure. You must read over the Fluent UDF Manual and examples in order to to this.

Thank you PPA for your reply above

yes I could understand that. Can you please send me the .c file(s) you have used to solve the flow through the tube. My e-mail is
g.ibrahim@hotmail.co.uk

I do appreciate your help and thanks in advbance

Kindest Regards
Ibo