Force Drag vs Length

JEHERZ · March 20, 2012, 13:24

Hello..

How I could to plot?

force drag vs lenght (model)

I need to know the behaviour the force drag along the lenght of my model.

I found the drag but it was global, with this expression force_z()@body.

I'm sorry my english is bad

I need your help, please

help me

ghorrocks · March 20, 2012, 16:23

You are probably looking for the pressure coefficient. This is routinely drawn for air foil simulations, such as http://www.mh-aerotools.de/airfoils/...tributions.htm

Note that there is also a contribution from viscous wall shear. This is usually small in airfoil simulations as they run at high Reynolds number.

So a combination of pressure and wall shear will determine the force acting on the body. These parameters can be plotted against distance.

March 20, 2012, 13:24	Force Drag vs Length	#1
JEHERZ New Member Join Date: May 2010 Posts: 4 Rep Power: 15	Hello.. How I could to plot? force drag vs lenght (model) I need to know the behaviour the force drag along the lenght of my model. I found the drag but it was global, with this expression force_z()@body. I'm sorry my english is bad I need your help, please help me

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March 20, 2012, 16:23		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,700 Rep Power: 143	You are probably looking for the pressure coefficient. This is routinely drawn for air foil simulations, such as http://www.mh-aerotools.de/airfoils/...tributions.htm Note that there is also a contribution from viscous wall shear. This is usually small in airfoil simulations as they run at high Reynolds number. So a combination of pressure and wall shear will determine the force acting on the body. These parameters can be plotted against distance.