Direct-inverse transonic wing-design method in curvilinear coordinates including viscous interaction
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Ratcliff, Robert R.↗
Engineering topics
Ratcliff, Robert R.
Publications and source records attributed to Ratcliff, Robert R..
Inverse wing design in transonic flow including viscous interaction
Several inverse methods were compared and initial results indicate that differences in results are primarily due to coordinate systems and fuselage representations and not to design procedures. Further, results from a direct-inverse method that includes 3-D wing boundary layer effects, wake curvature, and wake displacement are represented. These results show that boundary layer displacements must be included in the design process for accurate results.
Carlson, Leland A.↗
A direct-inverse transonic wing-design method in curvilinear coordinates including viscous-interaction
Progress in the direct-inverse wing design method in curvilinear coordinates has been made. A spanwise oscillation problem and proposed remedies are discussed. Test cases are presented which reveal the approximate limits on the wing's aspect ratio and leading edge wing sweep angle for a successful design, and which show the significance of spanwise grid skewness, grid refinement, viscous interaction, the initial airfoil section and Mach number-pressure distribution compatibility on the final design. Furthermore, preliminary results are shown which indicate that it is feasible to successfully design a region of the wing which begins aft of the leading edge and terminates prior to the trailing edge.
Ratcliff, Robert R.↗