Measurement of turbulent supersonic steam jet flow characteristics using TDLAS

Al-Manea, Ahmed and Buttsworth, D. and Saleh, K. and Malpress, R. and Leis, John ORCID: (2022) Measurement of turbulent supersonic steam jet flow characteristics using TDLAS. Flow Measurement and Instrumentation, 87:102212. pp. 1-10. ISSN 0955-5986


Ejectors have no moving parts and are preferable to mechanical compressors in many applications, but ejectors typically have a relatively low efficiency. To aid in the ejector design process, thorough understanding of the turbulent mixing of multi-phase compressible jets is beneficial.

This paper reports experimental results for Tunable Diode Laser Absorption Spectroscopy (TDLAS) measurements derived from an axisymmetric supersonic steam jet apparatus.

In this experimental work, a supersonic steam jet nozzle exit of a diameter 13.6 mm was surrounded by a low-speed flow of dry nitrogen. The TDLAS system was traversed through the flow at three different planes downstream from the ejector nozzle exit: 15, 20, and 30 mm distance. At each of the three planes, line-of-sight measurements were made with the laser passing through locations between 0 and 15 mm from the jet centreline.

Through the analysis of the TDLAS data and application of the Abel inversion method, the radial distribution of the pressure, temperature, and the concentration of the water-vapour were obtained. The key findings are that it is possible to determine key physical parameters using experimental TDLAS measurements when combined with a suitable numerical optimization approach.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Files associated with this item cannot be displayed due to copyright restrictions.
Faculty/School / Institute/Centre: Current – Faculty of Health, Engineering and Sciences - School of Engineering (1 Jan 2022 -)
Faculty/School / Institute/Centre: Current - Institute for Advanced Engineering and Space Sciences (1 Aug 2018 -)
Date Deposited: 13 Jul 2022 01:48
Last Modified: 14 Oct 2022 02:34
Uncontrolled Keywords: Ejectors; Turbulent; Fluid mechanic; Multiphase flow; TDLAS
Fields of Research (2020): 40 ENGINEERING > 4099 Other engineering > 409902 Engineering instrumentation
40 ENGINEERING > 4001 Aerospace engineering > 400199 Aerospace engineering not elsewhere classified
40 ENGINEERING > 4017 Mechanical engineering > 401799 Mechanical engineering not elsewhere classified
Socio-Economic Objectives (2020): 28 EXPANDING KNOWLEDGE > 2801 Expanding knowledge > 280110 Expanding knowledge in engineering
14 DEFENCE > 1401 Defence > 140104 Emerging defence technologies
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