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Stallion 3D - Transonic Wing Results

The following computations were performed using Stallion 3D, the fully integrated three-dimensional compressible flow analysis tool. The software features an automatic cartesian grid scheme for immersed boundaries coupled with an accurate compressible flow solver based on the Euler equations.  The present results are for a moderate sized grid of 200,000 cells with about 20,000 boundary cells.  The grid was generated for the full wing using Stallion 3D built-in geometry creation tool.  


Figure 1: ONERA M6 Wing, M=0.84, Angle of Attack=3.06 Deg. The pressure distribution shows lambda shock while the outboard streamlines illustrates the wing tip effects. Click here for animation.


Figure 2: Cp at 20% Span. Black circles are Stallion 3D results. Blue Squares are the Experimental Results.


Figure 3: Cp at 44% Span. Black circles are Stallion 3D results. Blue Squares are the Experimental Results.


Figure 4: Cp at 65% Span. Black circles are Stallion 3D results. Blue Squares are the Experimental Results.


Figure 5: Cp at 80% Span. Black circles are Stallion 3D results.


Figure 6: Cp at 90% Span. Black circles are Stallion 3D results. Blue Squares are the Experimental Results.


Figure 7: Cp at 95% Span. Black circles are Stallion 3D results. Blue Squares are the Experimental Results.


Figure 3: Cp at 99% Span. Black circles are Stallion 3D results.

Computational results were further compared to the pertinent test case of the NPARC Alliance Validation Archive. After 2,200 interations, Stallion 3D produced a Cl of 0.274 and pressure Cd of 0.0189 (based on planform area). The WIND code results in a Cl of 0.2657 and pressure Cd of 0.0112.  CFL3D reports a Cl of 0.2657 and Cd of 0.01724 (total).  

The experimental results are from Schmitt and Charpin's Argard Report, "Pressure Distributions on the ONERA-M6-Wing at Transonic Mach Numbers," experimental Data Base for Computer Program Assessment. Report of the Fluid Dynamics Panel Working Group 04, AR-138,  May 1979

See also: Stallion 3D, M6 Wing AnimationRace Car Animation.

System rquirements
Stallion 3D requires a PC running either Windows XP, Vista or 7. The above computations were performed on a Windows XP based laptop computer.

More information
Please click here to find out more about Stallion 3D.


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