Induced Drag Compressibility Correction for 3D Vortex Lattice Methods

AT Melin (Linkoping University, Sweden), AT Isikveren (University of Bristol) & MI Friswell (Swansea University)

Journal of Aircraft, Vol. 47, No. 4, July-August 2010, pp. 1458-1460

Abstract

This paper covers the implementation of the Prandtl-Glauert (PG) rule for compressibility corrections at high subsonic Mach numbers in the subset of panel methods known as Vortex Lattice Methods (VLM). The PG compressibility correction is based on the Prandtl-Glauert rule, the similarity rule between flows in the incompressible and the compressible plane. The flow field in the VLM is resolved in the incompressible plane and the results are transformed to the compressible plane. While the PG rule is an exact relation for inviscid flow, the term correction is more appropriate when comparing computed data with experimental results. The method proposed allows for a more stringent treatment of the induced drag.

Paper Availability

This material has been published in the Journal of Aircraft, Vol. 47, No. 4, July-August 2010, pp. 1458-1460. Unfortunately the copyright agreement with AIAA does not allow for the PDF file of the paper to be available on this website. However the paper is available from AIAA - see the link below.


Link to paper using doi: 10.2514/1.C000197

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