CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > OpenFOAM

a problem in drag coefficient calculating

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

Like Tree1Likes
  • 1 Post By anijdon

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   March 24, 2011, 03:12
Default a problem in drag coefficient calculating
  #1
Member
 
Maryam Mousazadeh
Join Date: Oct 2010
Posts: 47
Rep Power: 15
anijdon is on a distinguished road
Hello foamers;
I want to calculate drag coefficient on each walls of a cube with unit dimension which is located in a flat plate. The inlet velocity components are (1,0,0) and the density of fluid is 0.1; I add the following code to controlDict :
functions
{ forces
{
type forceCoeffs;
functionObjectLibs ( "libforces.so" );
outputControl timeStep;
outputInterval 1;
patches
(
top
);
pName p;
UName U;
log true;
rhoInf 0.1;
CofR (0 0 0 );
liftDir ( 0 0 0 );
dragDir ( 1 0 0 );
pitchAxis ( 0 0 0 );
magUInf 1;
lRef 1;
Aref 1;
}
}
But the result isn't true. Would you tell me the mistake?
Thanks;
EmadTandis likes this.
anijdon is offline   Reply With Quote

Old   March 20, 2013, 13:11
Default Cd calculation
  #2
Member
 
Emad Tandis
Join Date: Sep 2010
Posts: 77
Rep Power: 15
EmadTandis is on a distinguished road
Hi
Do you use OpenFoam software for your simulation?
EmadTandis is offline   Reply With Quote

Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
drag coefficient in ansys fluent 12.0 krishna FLUENT 19 April 12, 2018 01:49
lift & drag coefficient on airfoil n. natik FLUENT 8 March 31, 2015 20:02
Drag Coefficient for Ellipse Form (2D) Ketut Utama Main CFD Forum 8 December 11, 2014 12:03
coefficient drag JEHERZ CFX 5 February 9, 2012 07:28
How to update polyPatchbs localPoints liu OpenFOAM Running, Solving & CFD 6 December 30, 2005 18:27


All times are GMT -4. The time now is 08:03.