Effect of Wind-Tunnel Contraction on Free-Stream Turbulence
作者： MAHINDER S. UBEROI
DOI: 10.2514/8.3651
关键词: Turbulent velocity 、 Contraction (grammar) 、 Physics 、 Boundary layer 、 Spectral line 、 Mechanics 、 Vorticity 、 Wind tunnel 、 Turbulence 、 Incompressible flow
摘要: The effect of wind-tunnel contraction on free-stream turbulence is determined by passing a well-defined through three contractions ratios 4 : 1 , 9 :1 and 16:1. Turbulent velocity measurements show that, in absolute magnitudes, the longitudinal component decreases lateral increases as flow accelerates contraction. Postand precontraction spectra are measured to get an idea about distortion structure.
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