Thursday, September 25, 2014

Stallion 3D Lift/Drag Study

Stallion 3D is a modern  aerodynamics and computational fluid dynamics (CFD) analysis software tool.  The software allows users to bypass the time-consuming grid generation step and setup their problem for analysis in just a matter of a few seconds.  Stallion 3D is the best tool for aerodynamics analysis of arbitrary geometries on your MS Windows PC.

The following pictures are results obtain using Stallion 3D for  a lift and drag study of the DLR F4 wing-body.    The geometry was obtained from NASA OpenVsp hangar. Extensive data for this study was obtained from NASA 1st Drag Prediction Workshop (DPW1).  The url is:

Only 500,000 computation cells were used for the present Stallion 3D analysis.  Results were obtained after 4 hours of computation time for each angle of attack using a laptop computer under MS Windows.  To speed-up the simulations, two cases were run simultaneously on the laptop.  This allowed a complete study in less than 24 hours.

Stallion 3D pressure distribution for DLR F4 at 2 deg angle of attack

CL versus angle of attack.  Results are from Stallion 3D
and CFL3D (as reported during DPW1).

Lift vs. Drag for the DLR F4 wing body.  Since the 
Euler equations was used for Stallion 3D, the graph shows 
pressure drag (CD_pres) for Stallion 3D.  This is compared
against the total drag from CFL3D and the experiments.

Pressure coefficient a station along the wing at 2 deg angle of attack.
The lines are for results obtained  by CFD3D as presented at DPW1.

More information about Stallion 3D can be obtained from

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1 comment:

  1. Hey, its a really great blog post of i enjoyed lot.Thanks for a share with us.good bye.