CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > General Forums > Main CFD Forum

Simple question for friction velocity

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   February 12, 2004, 17:12
Default Simple question for friction velocity
  #1
jay
Guest
 
Posts: n/a
Hi.. I have a simple question..

How to calculate the wall friction velocity (Utau) in three dimensional case?

In 2-d, Utau = sqrt((Mu*(du/dy))/rho).. but.. in case of 3-d, i think Utau = sqrt((Mu*(du/dy+ add something))/rho) or.. how can I express the Utau or thw wall shear stress in 3-D?

please answer for me.. when it is in x-y-z coordinate, x is streamwise, y is the normal direction, z is the spanwise..

Thank you..
  Reply With Quote

Reply


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 Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
ask a simple question. beginner Main CFD Forum 3 December 26, 2016 13:02
velocity profile inlet boundary condition question Lcw FLUENT 3 August 3, 2012 06:53
Simple COMSOL Question eric.m.tridas COMSOL 0 May 9, 2011 13:06
Simple post-processing question: velcoity profile Svetlana Nosedung FLUENT 1 May 8, 2006 15:35
A simple question Chandra Shekhar Main CFD Forum 0 January 31, 2005 03:44


All times are GMT -4. The time now is 21:19.