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文摘
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将Hartmann-Sprenger(H-S)管集成到传统射流装置中形成激励射流,研究其在超声速流场中的混合特性.设计了3种频率的C02激励射流,将其横向注入Ma=2.5的均匀超声速来流当中.采用平面激光散射技术对其进行瞬态可视化成像,利用组分采样进行时均分析,结果表明: H-S激励射流可以有效提高射流穿透深度,形成较多大尺度结构,从而获得较好的混合效果 |
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其他语种文摘
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Hartmann-Sprenger(H-S)tube could generate oscillated flow with high frequency and high amplitude under JRG mode. This article made an excited jet by putting H-S tube into the traditional jet device to investigate its effects on the supersomc mixing. The CO_2 jets excited under three different frequencies were injected into the Mach 2.5 supersonic flow. Planar laser scattering was used to visualize the instantaneous flow while sampling the concentration of CO_2 was used to obtain the time-averaged results. The results showed that the excited jet improved the depth of jet penetration, and made much more large-scale structures,so that it got better mixing in the supersonic flow, especially in the 1 kHz-excited case |
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来源
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力学学报
,2010,42(5):957-961 【核心库】
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关键词
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激励射流
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超声速混合
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穿透深度
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大尺度结构
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地址
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1.
中国科学院高超声速科技中心, 中国科学院高温气体动力重点实验室, 北京, 100190
2.
中国科学院力学研究所, 中国科学院高温气体动力重点实验室, 北京, 100190
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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0459-1879 |
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学科
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力学 |
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基金
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国家自然科学基金资助项目
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文献收藏号
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CSCD:4033914
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