[ppa381]

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.

[Ibo]

Originally Posted by ppa381

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

[ppa381]

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.

[Ibo]

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