| 双旋空气流场紊流特性的实验研究 |
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| 引用本文： | 黄学民,王洪铭,邹正平.双旋空气流场紊流特性的实验研究[J].航空动力学报,1995,10(3):289-291,315. |
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| 作者姓名： | 黄学民 王洪铭 邹正平 |
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| 作者单位： | 北京航空航天大学 |
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| 摘 要： | 运用热线风速仪对反向双旋流空气雾化喷嘴出口空气流场的脉动流速、紊流度及紊流涡团的脉动频率进行了实验测量。结果表明:内外环反向旋流掺混时相交边界层内的脉动流速大、紊流度强；掺混结束后的旋转射流紊流度减小, 且紊流度径向分布均匀。
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| 关 键 词： | 流场 脉动速度 紊流流动 |
| 收稿时间： | 9/1/1994 12:00:00 AM |
| 修稿时间： | 1994/11/1 0:00:00 |
AN EXPERIMENTAL INVESTIGATION ON TURBULENT CHARACTERISTICS IN COUNTERROTATING AIRFLOW FIELD |
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| Huang Xuemin,Wang Hongming and Zou Zhengping.AN EXPERIMENTAL INVESTIGATION ON TURBULENT CHARACTERISTICS IN COUNTERROTATING AIRFLOW FIELD[J].Journal of Aerospace Power,1995,10(3):289-291,315. |
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| Authors: | Huang Xuemin Wang Hongming and Zou Zhengping |
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| Institution: | 4th Dept.Beijing University of Aeronautics and Astronautics,Beijing 100083 |
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| Abstract: | Fluctuating velocity,turbulence intensity and the fluctuating frequency of turbulent airflow within a counterrorating airflow field were investigated experimentally with hot-wire anemometers.It is showed that turbulence intensity and fluctuating velocity are very large in the boundary layer region,where counterrotating airflow mixes violently;after mixing,the turbulence intensity of swirling airflow decreases and distributes uniformly in radial direction;various eddy scales exist in airflow field,the fluctuating frequency band is very wide without main frequency. |
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| Keywords: | Fluctuating velocity Flow fields Turbulent flow |
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