Velocity measurements in a hypersonic flow using acetone molecular tagging velocimetry

被引：11

作者：

Andrade, Angelina ^{[1
]}

Hoffman, Eugene N. A. ^{[1
]}

LaLonde, Elijah J. ^{[1
]}

Combs, Christopher S. ^{[1
]}

机构：

[1] Univ Texas San Antonio, Margie & Bill Klesse Coll Engn & Integrated Desig, Dept Mech Engn, San Antonio, TX 78249 USA

来源：

OPTICS EXPRESS | 2022年 / 30卷 / 23期

基金：

美国国家航空航天局;

关键词：

BOUNDARY-LAYER; PROFILE MEASUREMENTS; GAS-FLOWS; JET; PHOSPHORESCENCE; NAPHTHALENE;

D O I：

10.1364/OE.474841

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In the present work, a non-intrusive diagnostic technique known as molecular tagging velocimetry was used to collect quantitative freestream velocity measurements in the Mach 7 Ludwieg Tube Wind Tunnel located at The University of Texas at San Antonio. This laser-based diagnostic technique used a single Nd:YAG 4th harmonic laserline to excite acetone molecules seeded in the flow field. From the resulting emitted light, mean and instantaneous velocity profiles in the hypersonic freestream flow and facility boundary layer were measured. Uncertainty in the velocity measurements for individual test runs is estimated at = 8% while overall 1D freestream mean velocity measurements were recorded with +/- 2.4% (+/- 21 m/s) accuracy. The effect of acetone seeding on the speed of sound was also quantified. (c) 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement

引用

页码：42199 / 42213

页数：15

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