Transonic Potential Flow around Axisymmetric Inlets and Bodies at Angle of Attack

Abstract

An analysis has been developed and a computer program written to predict transonic potential flow about axisymmetric inlets, with or without centerbodies, and axisymmetric bodies at an arbitrary angle of attack. The method is a line relaxation solution of the complete potential flow equation in a cylindrical coordinate system. The only restriction of the program is that the body be axisymmetric; the computer flowfield is fully threedimensional. Special differencing is used for 0 derivatives in order to reduce greatly the cost of computation by allowing the use of coarse mesh spacing in 0. Several comparisons between theory and experiment are presented to show the validity of the analysis.