Open AccessTheoretical and experimental investigations on aero-optical effect at the second stage of the compressible mixing layer
Author(s) -
Caijun Gan,
Lihui Lang,
Handong Ma,
Hongwei Xiong
Publication year - 2014
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.63.054703
Subject(s) - mixing (physics) , mechanics , compressibility , reynolds stress , compressible flow , mach number , materials science , layer (electronics) , turbulence , reynolds number , turbulence kinetic energy , optics , physics , quantum mechanics , composite material
Using dimensional analysis and experimental technique, the aero-optical effect at the second stage of a compressible mixing layer has been investigated. The theoretical analysis focuses on the relation between two-dimensional large-scale structure of a mixing layer and its corresponding aero-optical effects. Results show that the time-averaged bore-sight error (BSE) has nonlinear variability with the convective Mach number (Mc). Moreover, we also present the relation among time-averaged BSE and turbulent kinetic energy, Reynolds shear stress at the interface between the mixing layer and free stream. Experimental results from a thin beam light passing through the compressible mixing layer verifly the theoretical result between time-averaged BSE and Mc.