改进的预测气体燃料贫油熄火边界的半经验公式

推进技术 ›› 2015, Vol. 36 ›› Issue (11): 1677-1685.

改进的预测气体燃料贫油熄火边界的半经验公式

孙磊,黄勇,张鼎,肖为

北京航空航天大学航空发动机气动热力重点实验室，北京 100191,北京航空航天大学航空发动机气动热力重点实验室，北京 100191,北京航空航天大学航空发动机气动热力重点实验室，北京 100191,北京航空航天大学航空发动机气动热力重点实验室，北京 100191

发布日期:2021-08-15
作者简介:孙磊(1988—)，男，博士生，研究领域为航空发动机燃烧。

An Improved Semi-Empirical Correlation for Prediction of Lean Blowout Limits for Gas Turbine Combustors Using Gas Fuel

National Key Laboratory of Aerodynamics & Thermodynamics on Aero-Engine，Beijing University of Aeronautics and Astronautics，Beijing 100191，China,National Key Laboratory of Aerodynamics & Thermodynamics on Aero-Engine，Beijing University of Aeronautics and Astronautics，Beijing 100191，China,National Key Laboratory of Aerodynamics & Thermodynamics on Aero-Engine，Beijing University of Aeronautics and Astronautics，Beijing 100191，China and National Key Laboratory of Aerodynamics & Thermodynamics on Aero-Engine，Beijing University of Aeronautics and Astronautics，Beijing 100191，China

Published:2021-08-15

摘要/Abstract

摘要： 为了进一步考察采用气体燃料时，火焰体积(FV)模型对贫油熄火边界预测的适用性，推导了气体燃料的FV模型。经过对7种典型的航空发动机燃烧室(即采用双径向旋流器和双轴向旋流器，分别改变一级旋流器、二级旋流器的进气面积和主燃孔的个数)进行验证实验，并与液体燃料FV模型和Lefebvre模型的预测结果进行比较。结果表明，上述三种模型虽然基本都可以用于气体燃料贫油熄火边界的预测，但各自的预测精度不同。在实验范围内，气体燃料FV模型、液体燃料FV模型、Lefebvre模型的预测精度依次为[±]5.6%，[±]6.9%，[±]7.1%。气体燃料FV模型在预测气体燃料的贫油熄火边界时有最好的预测精度。

关键词: 燃气轮机燃烧室；气体燃料；贫油熄火边界预测；气体燃料FV模型

Abstract: In order to further investigate the applicability of Flame Volume (FV) model for predicting lean blowout limits of gas fuels，FV-model for gas fuels is deduced. To validate this model，experiments are conducted on 7 typical aircraft engine combustors (adopting dual-radial swirl-stabilized assembly and dual-axial swirl-stabilized assembly，changing flow area of primary swirler and secondary swirler and number of primary holes，respectively). The results predicted by gas fuel FV-model are compared with the results by liquid fuel FV-model and Lefebvre model. It verified that aforementioned 3 models can predict lean blowout for gas fuels，while respective predictive accuracies are slightly different. Within the limit of these experiments，the predictive accuracies of gas fuel FV-model，liquid fuel FV-model，Lefebvre model are [±]5.6%，[±]6.9%，[±]7.1%，respectively. In conclusion，gas fuel FV-model has best accuracy to predict lean blowout limits for gas fuel.

Key words: Gas turbine combustor；Gas fuels；Prediction of lean blowout limits； FV-model for gas fuels

孙磊,黄勇,张鼎,肖为. 改进的预测气体燃料贫油熄火边界的半经验公式[J]. 推进技术, 2015, 36(11): 1677-1685.

SUN Lei,HUANG Yong,ZHANG Ding,XIAO Wei. An Improved Semi-Empirical Correlation for Prediction of Lean Blowout Limits for Gas Turbine Combustors Using Gas Fuel[J]. Journal of Propulsion Technology, 2015, 36(11): 1677-1685.

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