Study on Hysteretic and Asymmetric Phenomena of Shock Wave Structure in Supersonic Nozzles

超声速喷管激波结构迟滞和不对称现象的研究

• 批准号: 21560180
• 负责人: SETOGUCHI Toshiaki
• 金额: $ 3.16万
• 依托单位: Saga University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21560180/
• 关键词: 圧縮; 非圧縮流; 超音速ノズル; 履歴現象; 非対称衝撃波; 準定常解析; 非平衡凝縮; 圧縮性流体; 超音速ノズル流れ; 衝撃波

In a supersonic nozzle(Laval nozzle), a shock wave is generated in the supersonic flow downstream of the nozzle throat in case ofφc<φ<φe(φ: ratio of back pressure to stagnation pressure of the wind tunnel,φe : minimum pressure ratio for choking at the nozzle throat,φc : pressure ratio in case with the shock wave at the exit of the Laval nozzle). Here, even if value ofφis the same in the processes of an increase and a decrease ofφ, the difference for shock wave structure(position and shape of the shock wave) is expected to arise. In this study, the hysteresis phenomenon for shock wave structure in supersonic nozzles was elucidated based on experimental and simulated results comprehensively and the effect of rate of the change of pressure ratio on the hysteretic phenomenon was indicated specifically. Further, the relationship of hysteretic and asymmetric phenomenon of shock wave structure was shown based on experimental results.

在超音速喷嘴（Laval喷嘴）中，在喷嘴喉咙下游的超音速流中产生冲击波，如果φc<φ<φe：φe的背压与风隧道的停滞压力的比率，φe：chove chove chove chove notzle swive notzle swive chove swie cyce syply的压力比：aign swiber的压力率最小。在这里，即使在增加和减少φ的过程中相同的值相同，也有望出现冲击波结构（冲击波的位置和形状）的差异。在这项研究中，根据实验和模拟结果阐明了超音速喷嘴中冲击波结构的磁滞现象，并特别指出了压力比变化速率对滞后现象的影响。此外，根据实验结果，显示了冲击波结构的滞后和不对称现象的关系。

项目成果

Heuy Dong Kim、Hysteresis Phenomenon of Shock Wave in a Supersonic Nozzle

Heuy Dong Kim，超音速喷嘴中冲击波的滞后现象

• 发表时间: 2010
• 作者: Toshiaki Setoguchi;Shigeru Matsuo;Miah Md. Ashraful Alam;Norimasa Shiomi
• 通讯作者: Norimasa Shiomi

Hysteretic Phenomena of Shock Waves with Asymmetric Characteristics in a Supersonic Nozzle

超声速喷管中具有不对称特性的冲击波的滞后现象

• 发表时间: 2011
• 作者: Koichi Kubo;Nobuhiko Mihara;Akira Enishi;Toshiaki Kanemoto;吉永隆夫;Shigeru Matsuo
• 通讯作者: Shigeru Matsuo

Experimental study on hysteresis phenomena of shock wave structure in an over-expanded axisymmetric jet

过膨胀轴对称射流激波结构滞后现象的实验研究

• 发表时间: 2011
• 期刊: Journal of Mechanical Science and Technology
• 影响因子: 1.6
• 作者: Shigeru Matsuo;Toshiaki Setoguchi;Junji Nagao;Miah Md. Ashraful Alam;Heuy Dong Kim
• 通讯作者: Heuy Dong Kim

Hysteretic phenomenon of shock wave in a supersonic nozzle

• DOI: 10.1007/s11630-010-0419-4
• 发表时间: 2010-12
• 期刊: Journal of Thermal Science
• 影响因子: 2.5
• 作者: T. Setoguchi;S. Matsuo;M. A. Ashraful Alam;J. Nagao;H. Kim

Study on the Hysteretic Phenomena of Shock Waves in a Supersonic Nozzle

超声速喷管冲击波滞回现象的研究

• 发表时间: 2010
• 期刊: Advances and Applications in Fluid Mechanics
• 作者: Toshiaki Setoguchi;Shigeru Matsuo;Miah Md. Ashraful Alam;Junji Nagao;Heuy Dong Kim
• 通讯作者: Heuy Dong Kim