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research-article

SHORT HELICAL COMBUSTOR: FLOW CONTROL IN A COMBUSTION SYSTEM WITH ANGULAR AIR SUPPLY

[+] Author and Article Information
Behdad Ariatabar

Institute of Thermal Turbomachinery, Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany
ariatabar@kit.edu

Rainer Koch

Institute of Thermal Turbomachinery, Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany
rainer.koch@kit.edu

Hans-Jörg Bauer

Institute of Thermal Turbomachinery, Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany
hans-joerg.bauer@kit.edu

1Corresponding author.

ASME doi:10.1115/1.4037961 History: Received July 13, 2017; Revised July 25, 2017

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 (c) 2017 by ASME
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