CFD Online Logo CFD Online URL
Home > Forums > FLUENT

wall slip udf

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

LinkBack Thread Tools Display Modes
Old   May 21, 2004, 06:11
Default wall slip udf
Posts: n/a
hello thank you is it possible to define velocity of fluid near wall(slip flow):U=B*(dU/dx or dy)^n and write udf for this boundary condition? if n=0.9 & B=0.02, is this udf is correct?

#include "udf.h"

DEFINE_PROFILE(slip, thread, nw) { cell_t c; Thread *t; int i;

face_t f;

begin_f_loop (f,thread)

double m =C_DWDY(c, t);


F_PROFILE(f,thread,nw) = 0.02* pow ( m, 0.9);

} end_f_loop (f,thread) } please if it is not correct,write it for me correctly

Yours faithfully Arash Avesta

  Reply With Quote

Old   May 21, 2004, 10:45
Default Re: wall slip udf
Posts: n/a
Hi it seems okay. what is problem with that ..kethireddy
  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
UDF to Access Wall Normal Concentration Gradient Daniel Tanner Fluent UDF and Scheme Programming 4 February 18, 2015 15:35
Slip flow boundary condition on wall using UDFs mahdi haddad FLUENT 1 November 11, 2014 07:13
UDF for slip and moving wall lichun Dong FLUENT 3 March 26, 2014 05:37
Natural convection in a closed domain STILL NEEDING help! Yr0gErG FLUENT 3 June 12, 2013 02:12
UDF hook on the WALL boundary condition Luke FLUENT 0 June 7, 2006 11:54

All times are GMT -4. The time now is 03:41.