Calculation of vortex flows on complex configurationsThe calculation of aerodynamic characteristics of complex configurations having strongly coupled vortex flows is a non-linear problem requiring iterative solution techniques. This paper discusses the use of a low-order panel method as a means of obtaining practical solutions to such problems. The panel method is based on piecewise constant source and doublet quadrilateral panels and uses the internal Dirichlet boundary condition of zero perturbation potential. The problems of predicting vortex/surface interaction and vortex separation are discussed. Some example calculations are included but further test cases have yet to be carried out, in particular for comparisons with experimental data. The problem of convergence on the iterative calculation for the shape of the free vortex sheet is addressed and a preprocessor routine, based on an unsteady, two-dimensional version of the panel method, is put forward as a cost-effective way of generating an initial vortex structure for use as a starting solution for general configurations.
Document ID
19820057379
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Maskew, B. (Analytical Methods, Inc. Redmond, WA, United States)
Rao, B. M. (Analytical Methods, Inc. Redmond, WA, United States)
Date Acquired
August 10, 2013
Publication Date
January 1, 1982
Subject Category
Aerodynamics
Meeting Information
Meeting: International Council of the Aeronautical Sciences