Simultaneous Temperature, Concentration, and Pressure Imaging of Water Vapor in a Turbine Engine

Author

Wood, Michael P. ; Ozanyan, Krikor B.

Author_Institution

Sch. of Electr. & Electron. Eng., Univ. of Manchester, Manchester, UK

Volume

15

Issue

1

fYear

2015

fDate

Jan. 2015

Firstpage

545

Lastpage

551

Abstract

We present a numerical study demonstrating the simultaneous reconstruction of the temperature, species concentration, and pressure of molecular water vapor, by tomographic means, from near-infrared laser absorption measurements over beam paths transecting the gaseous region. The synthetic measurement data is predicted from a set of randomized distributions of the reconstructed variables using spectroscopic theory and the HITRAN parameter database. Design optimization geometric orientation of the beams is performed to maximize reconstruction accuracy.

Keywords

adsorption; chemical variables measurement; design engineering; jet engines; measurement by laser beam; optimisation; pressure measurement; random processes; statistical distributions; temperature measurement; HITRAN parameter database; beam path; design optimization geometric orientation; gaseous region; molecular water vapor; near infrared laser absorption measurement; pressure imaging; random distribution; reconstruction accuracy maximisation; species concentration imaging; spectroscopic theory; synthetic measurement data prediction; temperature imaging; tomography; turbine engine; Absorption; Equations; Image reconstruction; Laser beams; Measurement by laser beam; Temperature measurement; Tomography; Diode lasers; hyperspectral imaging; temperature; tomography;

fLanguage

English

Journal_Title

Sensors Journal, IEEE

Publisher

ieee

ISSN

1530-437X

Type

jour

DOI

10.1109/JSEN.2014.2349796

Filename

6880308