MOLE-FRACTION IMAGING OF TRANSVERSE INJECTION IN A DUCTED SUPERSONIC-FLOW

被引:17
作者
ABBITT, JD
HARTFIELD, RJ
MCDANIEL, JC
机构
[1] University of Virginia, Aerospace Research Laboratory, Department of Mechanical and Aerospace Engineering, Charlottesville, VA
关键词
D O I
10.2514/3.10596
中图分类号
V [航空、航天];
学科分类号
08 ; 0825 ;
摘要
An experimental study has been performed of the mixing characteristics of air injected transversely as underexpanded jets behind a rearward-facing step into a ducted supersonic (Mach 2) air freestream. Laser-induced iodine fluorescence was used to generate two-dimensional images that are processed digitally by laboratory computer in order to yield time-averaged planar injectant mole-fraction distributions. The resulting planar images represent a three-dimensional data base of the time-averaged injectant mole-fraction distribution throughout the flowfield. This data base is used to reconstruct images showing mole-fraction distributions normal to the duct. These images normal to the duct provide a direct representation of the evolution of the supersonic mixing along the duct and allow one-dimensional mixing schedules to be developed from the three-dimensional data base.
引用
收藏
页码:431 / 435
页数:5
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