Distributed Excitation of Cross-Flow Vortices in Three-Dimensional Boundary Layers
作者： J. D. Crouch
DOI: 10.1007/978-3-642-79765-1_59
关键词: Mechanics 、 Surface finish 、 Stability theory 、 Mathematics 、 Classical mechanics 、 Perturbation (astronomy) 、 Vortex 、 Amplitude 、 Surface wave 、 Excitation 、 Direct numerical simulation
摘要: The receptivity of swept Hiemenz flow to stationary cross-flow vortices is analyzed using a generalization the classical stability theory. are excited by surface perturbations, either localized or nonlocalized in their chordwise extent. analysis provides amplitude as function perturbation characteristics. Results presented for roughness and nonuniform-suction perturbations. Nonlocalized occurs broad band wave numbers. results an array perturbations show that 3 7 times larger than single spanwise row. good agreement with earlier from direct numerical simulations.
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