Transonic viscous and inviscid solutions using a composite velocity procedure

Abstract

Solutions for transonic viscous and inviscid flows using a composite velocity procedure are presented. The velocity components of the compressible Navier-Stokes equations are written in terms of a multiplicative composite consisting of a viscous or rotational velocity and an inviscid, irrotational, potential like function. For viscous flows, the governing equations are solved using a coupled strongly implicit procedure and the outer inviscid flow corresponds to an irrotational, potential flow. Further investigation of the inviscid flow solution is made so that the correct rotational flow solution may be obtained for the transonic case. The Euler equations are solved for the inviscid flow calculations. Solutions to the full potential equation are recovered unless the axial momentum equation is written in full conservation form.