A Numerical Method for Designing Three-Dimensional Wing Based on Surface Panel Method〔含討論〕

概要

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A numerical method for designing three-dimensional wing from the specified pressure distribution based on surface panel method is presented. A number of hyperboloidal quadrilateral panels are used to approximate the surface of an original wing and the hydrodynamic characteristics of this original wing are calculated by potential based surface panel method employing the pressure Kutta condition. Then the geometry of the original wing is made to change in a small amount and the pressure increment due to this change is calculated by the same method. From them the influence coefficient matrix of wing geometry on pressure distribution is constructed. Utilizing the difference between the specified pressure distribution and the pressure distribution of the original wing, a linear equation system about the geometrical corrector of wing is established. The original wing geometry is modified with this corrector to form a new wing for next iteration. By means of repeating this computation procedure the wing that will have the specified pressure distribution can be obtained. Several wings have been designed as examples and the results have indicated that the method is effective to design the three-dimensional wing having the specified pressure distribution.
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