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Research on Characteristics of a New Marine Gas Turbine Exhaust Ejector Device

[+] Author Affiliations
Tao Sun, Lanxin Sun, Yigang Luan, Peng Sun

Harbin Engineering University, Harbin, China

Paper No. GT2016-57214, pp. V001T22A006; 6 pages
doi:10.1115/GT2016-57214
From:
  • ASME Turbo Expo 2016: Turbomachinery Technical Conference and Exposition
  • Volume 1: Aircraft Engine; Fans and Blowers; Marine
  • Seoul, South Korea, June 13–17, 2016
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-4968-2
  • Copyright © 2016 by ASME

abstract

Naval ships, as well as commercial ships, are exposed to more risks than before with the development of IR-guided threats. IR Suppress System (IRSS) is used to reduce or eliminate the infrared signatures of exhaust system of the ship. In order to optimize the structure of exhaust ejector and shorten the cycle of research, it is essential to study the successful experiences on exhaust ejectors by scholars abroad. In this article two structure innovations are introduced: an improved structure of nozzle and multi-stage diffuser; A new type of exhaust ejector for marine gas turbine is designed. Through simplifying the ejector model, numerical simulation is applied to forecast the characteristics of both the single-stage ejector and the multistage ejector. Result indicates the effects of structural parameters on the performance parameters. This research result has certain reference value for marine gas turbine exhaust ejector design and performance optimization.

Copyright © 2016 by ASME

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