Simultaneous density and velocity measurements in a supersonic turbulent boundary layer

被引：22

作者：

He Lin ^{[1
]}

Yi Shi-He ^{[1
]}

Tian Li-Feng ^{[1
]}

Chen Zhi ^{[1
]}

Zhu Yang-Zhu ^{[1
]}

机构：

[1] Natl Univ Def Technol, Coll Aerosp Sci & Engn, Changsha 410073, Hunan, Peoples R China

来源：

CHINESE PHYSICS B | 2013年 / 22卷 / 02期

基金：

中国国家自然科学基金;

关键词：

simultaneous measurements; density; velocity; Reynolds stress; DIRECT NUMERICAL-SIMULATION; SIMULTANEOUS TEMPERATURE; FIELD MEASUREMENT; VELOCIMETRY; FLOW; JET;

D O I：

10.1088/1674-1056/22/2/024704

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A novel technique for simultaneous measurements of instantaneous whole-field density and velocity fields of supersonic flows has been developed. The density measurement is performed based on the nano-tracer planar laser scattering (NPLS) technique, while the velocity measurement is carried out using particle image velocimetry (PIV). The present experimental technique has been applied to a flat-plate turbulent boundary layer at Mach 3, and the measurement accuracy of the density and velocity are discussed. Based on this new technique, the Reynolds stress distributions were also obtained, demonstrating that this is an effective means for measuring Reynolds stresses under compressible conditions.

引用

页数：7

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