Abstract: A transonic viscous flow computational method is described by using viscous/inviscid interaction technique. A shock point operator is introduced to account for the entropy change a(?)ross the shock and a nonisentropic full potential method is formulated to allow a more accurate inviscid flow computation. A new streamwise velocity profile is proposed. Based on this profile and other auxiliary relationship, a three dimensional inverse integral compressible turbulent boundary layer method is for-mulated.The inviscid and viscous solution are coupled with semi-inverse scheme.The numerical results show that this viscous/inviscid interaction method is in good agreement with experimental data and requires less computer resources.

Key words: transonic flow, boundary layer, noniseatropic flowviscous/iaviseid inter-action