Unsteadiness of Laminar Separation Bubble on Blunt Body

Abstract

The present review paper focuses on the recent works in studying the flows around a circular cylinder and a teardrop shaped model for the Reynolds numbers in the respective critical transition ranges, which are featured with the development of laminar separation bubbles on the contour surfaces. Particular attention was paid to the flow phenomena associated with the unsteadiness of laminar separation bubble(s), which appeared to have significant impact on the aerodynamic characteristics in this flow regime.