Non-intrusive measurement techniques for flow characterization of hypersonic wind tunnels

PM Danehy, J Weisberger, C Johansen, D Reese… - 2018 - ntrs.nasa.gov
This manuscript describes the wide variety of optical measurement techniques for
characterizing the flow in hypersonic wind tunnels. The introduction briefly describes …

[PDF][PDF] 可调谐半导体激光吸收光谱技术在高超声速风洞中的应用研究进展

方洪鑫, 支冬, 吴学成, 李云飞, 常雨, 陈卫… - Laser & …, 2024 - researching.cn
摘要高超声速风洞在航空航天领域占据着不可替代的作用. 可调谐半导体激光吸收光谱技术(
TDLAS) 是一种具备非接触, 灵敏度高, 多参数测量, 结构简单, 价格低廉和高时空分辨等优点的 …

Simulations of carbon-dioxide equilibrium infrared radiation measurements

A Lemal, H Takayanagi, S Nomura… - Journal of Thermophysics …, 2018 - arc.aiaa.org
This paper presents the simulations of equilibrium CO 2 infrared radiation measurements.
Transmission measurements and line-of-sight intensity measurements from microwave …

Enhancement limit of sensitivity in laser absorption spectroscopy using a multipass cell composed of spherical concave mirrors

M Matsui, R Kobayashi, T Yasui - Measurement Science and …, 2022 - iopscience.iop.org
The upper limit of sensitivity enhancement in a multipass process was investigated. In the
calculation of 3.7× 10 13 ray-trace analysis, the sensitivity enhancement was increased to …

Computational Modeling of Laser Absorption in Reacting Flows

TR Adowski, PT Bauman - Journal of Thermophysics and Heat Transfer, 2019 - arc.aiaa.org
The modeling and simulation of the Beer–Lambert law is developed and presented for laser
absorption along an arbitrary, straight optical path in which conditions along the optical path …

[图书][B] In Situ Probe-Enabled Tunable Diode Laser Absorption Measurements in Flames, Shock Tubes and Shock Tunnels

JJL Girard - 2021 - search.proquest.com
Spectroscopic measurement strategies enabled by in situ laser-based probes were
implemented in low-pressure flames, shock tubes, and a hypersonic reflected shock tunnel …

Modeling laser absorption in low-speed reacting flows using adaptive finite elements

TR Adowski - 2017 - search.proquest.com
In this work, we present a new quantity of interest (QoI) class for calculating laser absorption
along a straight arbitrary optical path through a low-speed chemically reacting flow. Laser …

Statistical Inference of Heterogeneous Surface Catalycity Models Using Simulated Laser Absorption Spectroscopy in Reacting Flow

TR Adowski - 2019 - search.proquest.com
With the current widespread availability of large scale computing resources, modeling of
complex physical systems governed by partial differential equations (PDEs) is becoming …