|January 30, 2013, 11:40||
calculate pitching moment coefficient
Join Date: Nov 2012
Posts: 25Rep Power: 5
I'm studying 3D wingbody currently to get CL,CD,CM.
In my results, CL,CD is acceptable compared to reference data.
(each error is less then 10%)
But CM, pitching moment coefficient is very far from reference.
(error is over 300%)
So i doubt my process to getting CM.
First, reference paper said
- Reference length(mac) : 0.6m
- Moment reference point : 0.45m
- Moment reference y-loc : 0.023m (down)
So, I set the 'reference values' in Fluent
- Length : 0.6m
- and velocity, area
And created 'moment monitor',
Moment center => x : 0.45, y : -0.023
Moment Axis => z : -1 (for left-hand direction of nose-up)
Wall zones : All surfaces of wingbody.
and ran simulation.
Am I right? How can be getting very far CM in spite of close CL and CD?
|Thread||Thread Starter||Forum||Replies||Last Post|
|2D Airfoil Centre of Pressure, Pitch Moment and Pitch Moment Coefficient||aerospain||ANSYS||1||January 6, 2014 15:29|
|Force can not converge||colopolo||CFX||13||October 4, 2011 22:03|
|drag and moment coefficient problem||josip76||FLUENT||3||June 12, 2011 10:45|
|Writing Moment coefficient for different walls at different rotational axis||harishameed33||Main CFD Forum||0||April 27, 2010 12:17|
|Delta wing Pitching moment||Riaan||FLUENT||1||March 15, 2005 02:07|