34th Congress of the International Council of the Aeronautical Sciences

03.3 - Basic Fluid Dynamics and Flow Control

ON THE INFLUENCE OF BASE FLOW CHARACTERISTICS ON CROSSFLOW INSTABILITY IN SWEPT BOUNDARY LAYERS

Z.-M. Xu¹, Z.-H. Han¹, H. Nie¹, W.-P. Song¹; ¹Northwestern Polytechnical University, China

Crossflow instability (CFI) is a crucial factor in triggering early transition in the three-dimensional boundary layer of a swept wing. This paper aims to investigate the impact of two key characteristics of base-flow velocity profiles on CFI. The findings are utilized to analyze how the sweep angle and pressure gradient influence the development of CFI on a swept wing.


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