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弹箭与制导学报 >

2019 , Vol. 39 >Issue 5: 89 - 94

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2019.05.021

超燃燃烧室肋片/凹腔结构组合数值研究

  • 杨文佳 ,
  • 高峰 ,
  • 王应洋 ,
  • 马新鹏
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  • 空军工程大学, 西安 710051

杨文佳(1995-),男,湖南邵阳人,硕士研究生,研究方向:宇航推进理论与工程。

收稿日期: 2018-09-02

  网络出版日期: 2025-05-12

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Numerical Study on Pylon/Cavity Combination in a Supersonic Combustion

  • YANG Wenjia ,
  • GAO Feng ,
  • WANG Yingyang ,
  • MA Xinpeng
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  • Air Force Engineering University, Xi’ an 710051, China

Received date: 2018-09-02

  Online published: 2025-05-12

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摘要

为进一步优化燃烧室流场,运用数值模拟方法在冷流条件下对不同凹腔长深比和后壁面倾角对肋片/凹腔结构组合燃烧室流场的影响进行研究。结果表明:增大凹腔长深比和减小凹腔后壁面倾角能较好提高射流穿透深度和掺混效率,但造成较大总压损失,且倾角越小倾角变化对总压损失的影响越明显;综合考虑,采用长深比为3、后壁面倾角为45°的凹腔与肋片进行结构组合能较好增大燃料穿透深度,促进掺混,且不明显增大总压损失。

关键词： 超燃燃烧室; 肋片; 凹腔; 数值模拟

本文引用格式

杨文佳 , 高峰 , 王应洋 , 马新鹏 . 超燃燃烧室肋片/凹腔结构组合数值研究[J]. 弹箭与制导学报, 2019 , 39(5) : 89 -94 . DOI: 10.15892/j.cnki.djzdxb.2019.05.021

Abstract

The numerical simulation has been carried out to investigate the cold flow characteristics for mixing efficiency and flame stability of the composite structure of pylon and cavity in the supersonic combustion. The different length-to-depth(L/D) and aft ramp angle(α) of the cavity structure have been comparative analyzed and investigated. It is noted that larger L/D are helpful in increasing the penetration depth of the jet and mixing efficiency, but also lead to a higher total pressure loss; The decrease of cavity aft ramp angle increase the penetration depth of the jet and total pressure loss, and the smaller the aft ramp angle is, the more obvious the influence of angle change on total pressure loss is. Moreover, cavity with the length-to-depth of 3 and aft ramp angle of 45° is recommended regarding high mixing efficiency and less total pressure loss.

Key words： supersonic combustion; pylon; cavity; numerical simulation

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