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弹箭与制导学报 >

2015 , Vol. 35 >Issue 5: 107 - 111

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2015.05.027

火箭技术

小支板构型对射流作用的数值分析

  • 王应洋 ,
  • 李旭昌 ,
  • 张晶 ,
  • 王博
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  • 1 空军工程大学防空反导学院, 西安 710051
    2 空军工程大学理学院, 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: 2014-09-09

  网络出版日期: 2025-05-28

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Pattern Design for Pylon Aided Gaseous Fuel Injection

  • WANG Yingyang ,
  • LI Xuchang ,
  • ZHANG Jing ,
  • WANG Bo
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  • 1 Air and Missile Defense College, Air Force Engineering University, Xi'an 710051, China
    2 Science College, Air Force Engineering University, Xi'an 710051, China

Received date: 2014-09-09

  Online published: 2025-05-28

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摘要

为分析小支板后喷射燃料在超燃燃烧室中的流动特性,运用数值模拟的方法研究了小支板对增强乙烯与主流掺混的作用规律。对比分析不同支板构型对燃料掺混的影响,发现支板增强掺混的机制主要在于在支板后方形成流向涡与低压区,前引导面与支板后缘面是影响混合性能差异的主要原因;前引导面面积越大来流产生的激波偏转角越大,支板后方产生涡量值更大的湍流区,但会带来更大总压损失;后缘面面积越大,支板后低压区范围越大,燃料穿透深度越大,混合效率越好。

关键词： 超声速燃烧; 小支板; 凹腔; 混合增强; 数值模拟

本文引用格式

王应洋 , 李旭昌 , 张晶 , 王博 . 小支板构型对射流作用的数值分析[J]. 弹箭与制导学报, 2015 , 35(5) : 107 -111 . DOI: 10.15892/j.cnki.djzdxb.2015.05.027

Abstract

Numerical simulation has been carried out to investigate cold flow characteristics of small pylon aided gaseous fuel injection in supersonic combustion. Several patterns were evaluated for mixing enhancement. It is noted that the stream wise vortex zone and low pressure depression behind the pylon are the paramount mechanism for mixing enhancement. The front face and rear face have evident effect on mixing efficiency. The front face provides high vorticity-magnitude swift current but leads to higher total pressure loss. Bigger rear face area can result in higher plume percentage by providing much more low pressure depression.

Key words： supersonic combustion; small pylon; cavity; mixing enhancement; numerical simulation

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