Experimental study of air/ethanol mono-injector gas generator

ZHAO Fang; REN Zebin; LI Xianfeng; GUO Longde; TAO Yu; SHI Yu; LUO Zhifeng

doi:10.11729/syltlx20180186

Volume 34 Issue 1

Feb. 2020

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Journal of Experiments in Fluid Mechanics > 2020 > 34(1): 72-78. > DOI: 10.11729/syltlx20180186

ZHAO Fang, REN Zebin, LI Xianfeng, GUO Longde, TAO Yu, SHI Yu, LUO Zhifeng. Experimental study of air/ethanol mono-injector gas generator[J]. Journal of Experiments in Fluid Mechanics, 2020, 34(1): 72-78. DOI: 10.11729/syltlx20180186

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Experimental study of air/ethanol mono-injector gas generator

1.
Facility Design and Instrumentation Institute of China Aerodynamics Research and Development Center, Mianyang Sichuan 621000, China
2.
State Key Laboratory of Aerodynamics, China Aerody-namics Research and Development Center, Mianyang Sichuan 621000, China
3.
AECC Sichuan Gas Turbine Research Establishment, Mianyang Sichuan 621000, China

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Received Date: November 25, 2018
Revised Date: September 09, 2019

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Abstract

Abstract

With regard to the safety, economy and miniaturization of the ejector system, a mono-injector air/ethanol gas generator based on the aero-engine combustor structure was designed. A series of ignition tests were carried out. The results show that:the technical design scheme of the gas generator is feasible, and reliable ignition of the gas generator can be realized by direct ignition of the high energy spark plug. The pressure curve indicates a rapid ignition of the generator, and the main working parameters basically meet the design index. The low limit of the excess air coefficient of the gas generator for reliable ignition is 3.9, showing a wide mass flow-rate range. The combustion efficiency is high, decreasing obviously with the increase of the excess air coefficient.
- ejector system,
- aero-engine combustor,
- gas generator,
- mono-injector,
- excess air coefficient

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