CFD Online Logo CFD Online URL
Home > Forums > FLUENT

User Defined Non Reflecting Boundary Condition

Register Blogs Members List Search Today's Posts Mark Forums Read

LinkBack Thread Tools Display Modes
Old   November 17, 2004, 06:55
Default User Defined Non Reflecting Boundary Condition
Posts: n/a
HI folks

I simulate a case with a shockwave in water. With 6.2.5 segregated solver (the new solution from fluent) or a udf-based 6.1.22 coupled imp solution. In both the problem is 2d, dp, compressible, unsteady. All shockwaves reflecting at the pressure-outlet boundary. Now I need to programm a NRBC (nonreflecting-BC) with UDF. My idea is that I read the Face-Pressure out in every BC-Face, invert it and write back to clean the reflection. I just need to see what happen in the closed case and each wave which leaves the boundary should not get reflected.

Thx for ur ideas Christian Tenger, Fachhochschule Biel Schweiz
  Reply With Quote

Old   November 17, 2004, 14:58
Default Re: User Defined Non Reflecting Boundary Condition
Posts: n/a
A simple can you set the value of the pressure you want? i'm really interested the way you do it. thanks Luca
  Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Wind turbine simulation Saturn CFX 34 October 16, 2014 05:27
Display boundary condition defined by UDFs trantoan2008 Fluent UDF and Scheme Programming 8 February 21, 2011 07:24
How exactly the "pressure outlet" bdry condition compute properties on the boundary? yating9901 FLUENT 3 June 28, 2010 12:26
Boundary condition using user subroutine wei CD-adapco 0 July 6, 2009 10:47
Partially reflecting boundary condition Rachel FLUENT 1 July 1, 2008 18:20

All times are GMT -4. The time now is 06:05.