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Short Helical Combustor: Flow Control in a Combustion System With Angular Air Supply

[+] Author Affiliations
Behdad Ariatabar, Rainer Koch, Hans-Jörg Bauer

Karlsruhe Institute of Technology, Karlsruhe, Germany

Paper No. GT2017-63037, pp. V04AT04A001; 7 pages
doi:10.1115/GT2017-63037
From:
  • ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition
  • Volume 4A: Combustion, Fuels and Emissions
  • Charlotte, North Carolina, USA, June 26–30, 2017
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-5084-8
  • Copyright © 2017 by ASME

abstract

The concept of the novel Short Helical Combustor (SHC) was investigated in our previous work [1, 2].

Based on the insight gained from these previous investigations, we propose a generic design improvement to address the tremendous loss of initial angular momentum as well as inhomogeneous flow and temperature field at the outlet of the SHC.

In the present paper, the main features of this design are introduced. It is shown that a three-dimensional shaping of the sidewalls, the dome, and the liners can effectively counteract the suboptimal interaction of the swirl flames with these surrounding walls.

As a result, the flow at the outlet of the combustor features a high angular momentum and exhibits a uniform flow angle and temperature field.

The insight gained from these generic investigations, and the resulting design optimization provides a useful framework for further industrial optimization of the SHC.

Copyright © 2017 by ASME

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