Boundary-layer transition - Analysis and prediction revisited

A highly efficient approach to stability analysis and spatial transition simulations in nonparallel boundary layers has been developed. Progress is being made elsewhere in the exploration of receptivity mechanisms. In light of these developments, the basic elements of the transition process and the weaknesses of current engineering methods for transition prediction are evaluated. The characteristics and validation of the new approach are briefly described and its utilization both as a research tool for analysis and as an engineering tool for prediction of transition in boundary layers are discussed.