A FAST VISCOUS CORRECTION METHOD APPLIEDTO SMALL DISTURBANCE POTENTIAL TRANSONICFLOWS IN THE FREQUENCY DOMAIN

摘要

A fast viscous correction method is applied tothe solution of the transonic small disturbancepotential equations in the frequency domain.The objective is to improve transonic results forwhich shock/boundary-layer interaction isimportant. That method has been applied totime domain analyses in the past with goodresults. In frequency domain the spatialnonlinear terms are preserved using atransformation technique known as harmonicaveraging. The main reason for using the TSDequation still is computational cost, especiallywhen dealing with complete aircraftconfigurations. Obtained results compare wellwith published experimental data for steadytransonic pressure distribution and flutteranalysis at low mean angles of attack.