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菱形口射流与超音主流的相互作用

樊怀国 张春晓 何川

樊怀国, 张春晓, 何川. 菱形口射流与超音主流的相互作用[J]. 应用数学和力学, 2005, 26(10): 1209-1215.
引用本文: 樊怀国, 张春晓, 何川. 菱形口射流与超音主流的相互作用[J]. 应用数学和力学, 2005, 26(10): 1209-1215.
FAN Huai-guo, ZHANG Chun-xiao, HE Chuan. Diamond Port Jet Interaction With Supersonic Flow[J]. Applied Mathematics and Mechanics, 2005, 26(10): 1209-1215.
Citation: FAN Huai-guo, ZHANG Chun-xiao, HE Chuan. Diamond Port Jet Interaction With Supersonic Flow[J]. Applied Mathematics and Mechanics, 2005, 26(10): 1209-1215.

菱形口射流与超音主流的相互作用

详细信息
    作者简介:

    樊怀国(1966- ),男,浙江人,讲师,博士(联系人.Tel:+86-23-65112117;Fax:+86-23-65102473;E-mail:hfan@cqu.edu.cn).

  • 中图分类号: O358

Diamond Port Jet Interaction With Supersonic Flow

  • 摘要: 基于在不同射流角(10°, 27.5°, 45°, 90°)和射流总压(0.1 MPa, 0.46 MPa)下,对音速次膨胀射流通过菱形口喷射到马赫5横穿主流的实验及圆形射流器的对比实验,研究了次膨胀射流与超音横穿主流相互作用流场, 实验包括横截面流场的Pitot和锥静压力, 获得横截面马赫数、 压力分布.结果表明近壁面低马赫数半圆区为尾区,尾区附近边界层减薄.脱体激波高度向自由流扩展,激波形状更弯曲, 低马赫数区较大.高射流压力和射流角增加羽流涡度,激波位置较高.90°菱形和圆形喷射器有更强的羽流涡度,但圆形喷射器的低马赫数区较小.前沿渐细的变壁面的斜面物增加羽流涡度,反之,双变壁面的斜面物减弱羽流涡度.通过表面激波形状、中心平面激波及横截面激波模化三维激波形状,激波总压损失用正激波关系式通过马赫数法向分量估计.激波总压损失随射流角和动压比的减小而减小,最大损失发生在90°圆形和菱形喷射器.
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出版历程
  • 收稿日期:  2004-02-23
  • 修回日期:  2005-05-13
  • 刊出日期:  2005-10-15

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