An Algorithm for the Prediction of Unsteady Potential Flow About an Arbitrary Aerofoil

摘要

A new model is presented for the calculation of the incompressible, inviscid flow around an arbitrary aerofoil undergoing unsteady motion. The numerical algorithm was developed from the steady flow model of Leishman and Galbraith, in which use was made of a linear distribution of panel vorticity, and also using a technique similar to that proposed by Basu and Hancock. A brief history of unsteady flow modelling is given in the introduction, followed by the mathematical details of the current method. Results are presented and discussed for a number of cases which clearly illustrate certain characteristics of unsteady flow.