|
[Sponsors] |
Drag force difference between Solver and Post |
|
LinkBack | Thread Tools | Search this Thread | Display Modes |
November 20, 2008, 18:50 |
Drag force difference between Solver and Post
|
#1 |
Guest
Posts: n/a
|
I am interested in finding the drag force of a blunt body.
When the solution is solving, I create a new monitor for the force on the surface in the Z direction. When I go to CFX Post and use the function calculator to get the force in the Z direction for the surface, I get a different answer than the one in the solver. So which one is right? |
|
November 21, 2008, 10:59 |
Re: Drag force difference between Solver and Post
|
#2 |
Guest
Posts: n/a
|
Could it be that CFX Post adds the viscous shear force? Because all of the drag forces in Post are higher then the ones in the Solver.
|
|
November 21, 2008, 13:02 |
Solved, I think
|
#3 |
Guest
Posts: n/a
|
I pretty sure that the difference is in the shear force. I was previously working with very small velocities, so the impact of the shear force was big. But now I'm working with regular velocities, and the impact is negligible.
|
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
ATTENTION! Reliability problems in CFX 5.7 | Joseph | CFX | 14 | April 20, 2010 16:45 |
drag monitore wrong but in post it's ok! | zeitistgeld | CFX | 3 | August 12, 2009 08:09 |
Drag force computation | Martin | Main CFD Forum | 9 | July 11, 2008 10:10 |
Actual drag force from dimensionless equations | slaxmi | CFX | 10 | September 14, 2007 20:20 |
How to determine the Drag Coefficient using POST? | Hans | CFX | 0 | January 18, 2006 20:53 |