Optimising laser absorption tomography beam arrays for imaging chemical species in gas turbine engine exhaust plumes

D. McCormick*, M. G. Twynstra, K. J. Daun, H. McCann

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper will describe the application of resolution matrices to the design of an optimised 126 beam, 6m absorption tomography array for imaging concentrations of CO2 in the exhaust plume of a Rolls-Royce Trent 1000 gas turbine engine. The resolution matrix will be used to define a fitness value, which is a function of the beam configuration, and is minimised by the optimal beam arrangement. Constraints ensure that the optimised beam arrangement can be implemented in a real tomography system. Genetic algorithms are used to determine the optimal array design from the large problem set.Results for image reconstructions of a quasi-realistic phantom of the exhaust plume for each of the array designs are presented with indications of the reconstruction errors. From the results, conclusions are drawn on the suitability of applying resolution matrices to the design of beam arrays for real limited-data tomographic systems.

Original languageEnglish
Title of host publication7th World Congress in Industrial Process Tomography
PublisherInternational Society for Industrial Process Tomography
Pages505-514
Number of pages10
ISBN (Print)9780853163237
Publication statusPublished - 1 Jan 2014
Event7th World Congress in Industrial Process Tomography, WCIPT7 - Krakow, United Kingdom
Duration: 2 Sep 20135 Sep 2013

Conference

Conference7th World Congress in Industrial Process Tomography, WCIPT7
Country/TerritoryUnited Kingdom
CityKrakow
Period2/09/135/09/13

Keywords

  • Absorption tomography
  • Array design
  • Chemical species
  • Gas turbine engines
  • Image reconstruction

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