Study of Compound Choking Phenomena and Compound Shock Waves in Compressible Internal Flows
可压缩内流复合窒息现象与复合冲击波研究
基本信息
- 批准号:17360083
- 负责人:
- 金额:$ 9.48万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (B)
- 财政年份:2005
- 资助国家:日本
- 起止时间:2005 至 2007
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
1. The compound choking by confluence of two subsonic and parallel streams through a converging nozzle was experimentally investigated for various ratios of the upstream stagnation pressure to the back pressure. The critical pressure ratio across the converging nozzle when the compound choking occurs at the nozzle exit was obtained for various nozzles. Also, the critical pressure ratio of the compound choking was calculated where the mixing of the two streams is taken into consideration. The calculated results agree well with the present experimental results.2. The behavior of two subsonic streams through a single converging nozzle was numerically analyzed from the viewpoint of the choking of the compound nozzle flow. A new criterion of the compound choking was presented taking the growth of the sonic line extending across the entire exit passage into consideration. The present criterion was compared and discussed with the criterion of the previous flow model.3. Even when the compound flow of two subsonic and parallel streams through a converging nozzle is choked, the flow condition near the exit of the nozzle changes if the back pressure is reduced. This means that the compound choking is not established at the nozzle exit just as the one-dimensional isentropic theory assumes, but the compound choking occurs near a finite region near the exit.4. The pressure wave propagating against two parallel subsonic streams in a constant area straight duct was investigated by both one-dimensional analysis and experiment. From these studies, the characteristics of compound sound waves were made clear. The pressure wave propagating against the streams is bifurcated and the shape is three dimensional, but the propagation velocity is nearly equal to the value by the previous one dimensional flow model.
1. 在不同的上游滞止压力与背压比条件下,研究了两种亚音速平行流通过会聚喷嘴汇合时的复合窒息现象。得到了不同喷嘴出口处发生复合堵塞时的临界压力比。在考虑两流混合的情况下,计算了复合堵塞的临界压力比。计算结果与实验结果吻合较好。从复合喷管流动堵塞的角度,数值分析了两个亚音速流通过单个收敛喷管的行为。提出了一种考虑整个出口通道声线增长的复合窒息判据。将该准则与先前的流动模型准则进行了比较和讨论。即使当两个亚音速平行流通过会聚喷管的复合流被阻塞时,如果降低背压,喷管出口附近的流动状况也会发生变化。这意味着复合堵塞并不像一维等熵理论假设的那样发生在喷管出口,而是发生在靠近出口的有限区域附近。采用一维分析和实验相结合的方法研究了压力波在等面积直管内沿平行亚音速流传播的过程。通过这些研究,明确了复合声波的特性。压力波沿流的传播是分岔的,形状是三维的,但传播速度几乎等于以前的一维流动模型的值。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
先細ノズル流れのチョークに及ぼす境界層の影響に関する実験
边界层对锥形喷嘴流阻影响的实验
- DOI:
- 发表时间:2007
- 期刊:
- 影响因子:0
- 作者:I. Hosako;et. al.;宮里 義昭;Yutaka Kadoya;近藤陽介
- 通讯作者:近藤陽介
Numerical Study of Compound Choking of Two Subsonic Streams
两种亚音速流复合扼流的数值研究
- DOI:
- 发表时间:2006
- 期刊:
- 影响因子:0
- 作者:I. Hosako;et. al.;Makiko Yonamine
- 通讯作者:Makiko Yonamine
Propagation of weak pressure waves against two parallel subsonic streams
- DOI:10.1007/s11630-006-0135-2
- 发表时间:2006-06
- 期刊:
- 影响因子:2.5
- 作者:Makiko Yonamine;Takanori Ushijima;Y. Miyazato;M. Masuda;H. Katanoda;K. Matsuo
- 通讯作者:Makiko Yonamine;Takanori Ushijima;Y. Miyazato;M. Masuda;H. Katanoda;K. Matsuo
二つの亜音速流れの合流による複合チョークに関する数値解析
两个亚音速流汇合引起的复合扼流圈的数值分析
- DOI:
- 发表时间:2006
- 期刊:
- 影响因子:0
- 作者:H. Yasuda;他;与那嶺 牧子
- 通讯作者:与那嶺 牧子
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MATSUO Kazuyasu其他文献
MATSUO Kazuyasu的其他文献
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{{ truncateString('MATSUO Kazuyasu', 18)}}的其他基金
Study of Oscillation Characteristics of Shock Trains Formed in Supersonic Internal Flow and its Suppressing Method
超音速内流激波列振荡特性及抑制方法研究
- 批准号:
13450078 - 财政年份:2001
- 资助金额:
$ 9.48万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Study on Aerodynamic Noise induced by Shock Waves in Supersonic Flows and Development of a Method for Reducing the Noise
超音速流中冲击波气动噪声的研究及降噪方法的开发
- 批准号:
09450080 - 财政年份:1997
- 资助金额:
$ 9.48万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Development of a New Method for Reducing Impulsive Aerodynamic Noise by means of Active Control Method
主动控制方法降低脉冲气动噪声新方法的开发
- 批准号:
07555380 - 财政年份:1995
- 资助金额:
$ 9.48万 - 项目类别:
Grant-in-Aid for Scientific Research (A)
Investigation of Choking Phenomena of Supersonic Micro-nozzle Flow with Flashing Evaporation
闪蒸超音速微喷嘴流壅塞现象研究
- 批准号:
06452176 - 财政年份:1994
- 资助金额:
$ 9.48万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Development of New Gas Atomizer Supersonic Nozzle System for Super-micro-metal Powder Production
用于超微金属粉末生产的新型气体雾化器超声喷嘴系统的开发
- 批准号:
04555045 - 财政年份:1992
- 资助金额:
$ 9.48万 - 项目类别:
Grant-in-Aid for Developmental Scientific Research (B)
Post-Shock Expansion Phenomenon in Supersonic Internal Flow
超音速内流中的激波后膨胀现象
- 批准号:
02452119 - 财政年份:1990
- 资助金额:
$ 9.48万 - 项目类别:
Grant-in-Aid for General Scientific Research (B)
Development of a New Method for Alleviation of Impulsive Aerodynamic - Noise by Means of Water - Sheet
开发一种利用水板减轻脉冲气动噪声的新方法
- 批准号:
01850044 - 财政年份:1989
- 资助金额:
$ 9.48万 - 项目类别:
Grant-in-Aid for Developmental Scientific Research
A study on the suppression of oscillation of pseudo-shock waves by means of passive boundary layer control
无源边界层控制抑制赝激波振荡的研究
- 批准号:
62460094 - 财政年份:1987
- 资助金额:
$ 9.48万 - 项目类别:
Grant-in-Aid for General Scientific Research (B)
Developemtn of a New Method for Control and %discharge o High Pressure Exhaust Gas by Means of Shock Wave Confinemnt
Developemtn%20of%20a%20New%20Method%20for%20Control%20and%20%discharge%20o%20High%20Pressure%20Exhaust%20Gas%20by%20Means%20of%20Shock%20Wave%20Confinemnt
- 批准号:
61850034 - 财政年份:1986
- 资助金额:
$ 9.48万 - 项目类别:
Grant-in-Aid for Developmental Scientific Research
A Study of Instability Phenomenon in a Supercritical Diffuser Flow
超临界扩压器流动不稳定现象的研究
- 批准号:
60550127 - 财政年份:1985
- 资助金额:
$ 9.48万 - 项目类别:
Grant-in-Aid for General Scientific Research (C)
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