乙烯超燃燃烧室支板/多凹腔一体化组合数值分析

王应洋; 李旭昌; 王宏宇; 吴振亚

doi:10.15892/j.cnki.djzdxb.2015.03.028

弹箭与制导学报 >

2015 , Vol. 35 >Issue 3: 107 - 112

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2015.03.028

火箭技术

乙烯超燃燃烧室支板/多凹腔一体化组合数值分析

王应洋 ,
李旭昌 ,
王宏宇 ,
吴振亚

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空军工程大学防空反导学院,西安 710051

王应洋(1990-),男,四川隆昌人,硕士研究生,研究方向:超声速燃烧。

收稿日期: 2014-06-13

网络出版日期: 2025-05-26

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Numerical Study on Supersonic Combustor Using Ethene with Strut and Multi-cavity Combination

WANG Yingyang ,
LI Xuchang ,
WANG Hongyu ,
WU Zhenya

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Air and Missile Defense College, Air Force Engineering University, Xi'an 710051, China

Received date: 2014-06-13

Online published: 2025-05-26

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摘要

为探索多凹腔与交错尾部支板组合时对燃烧室性能的影响,运用有限体积法对乙烯喷注当量比0.6的燃烧室进行了数值模拟。通过对比不同长深比的凹腔串、并联对混合效率、燃烧效率、总压损失的影响,发现并联凹腔能通过更早的实现燃料与主流充分掺混从而提供更大的燃烧区;长深比为3.5的凹腔串、并联对提高燃烧效率效果不明显,长深比为8的凹腔串、并联能显著提高混合效率和燃烧效率,其中长深比为8的凹腔并联燃烧室性能较好。

关键词： 超音速燃烧; 支板; 多凹腔; 结构组合; 数值模拟

本文引用格式

王应洋 , 李旭昌 , 王宏宇 , 吴振亚 . 乙烯超燃燃烧室支板/多凹腔一体化组合数值分析[J]. 弹箭与制导学报, 2015 , 35(3) : 107 -112 . DOI: 10.15892/j.cnki.djzdxb.2015.03.028

Abstract

The numerical study based on the method of finite volume and equivalence ratio 0.6 has been carried out to investigate the influence of patterns of staggered rear strut and multi-cavity. Mixing efficiency, combustion efficiency, and total pressure loss were compared. The analysis shows that the mixing and combustion are improved for cavities mounted in both tandem and parallel. Parallel cavity can enhance the combustion efficiency by a more appropriate fuel distribution. L/D = 3.5 doesn't have good efficiency and can't shorten chamber length. L/D = 8 has the higher combustion efficiency. Moreover, parallel cavity with L/D = 8 releases heat fast.

Key words： supersonic combustion; strut; multi-cavity; structure combination; numerical simulation

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