| D300mm×2000mm圆管内旋转流切向速度特征的实验研究 |
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| 引用本文： | 宋健斐,王甜,徐国,徐俊,魏耀东.D300mm×2000mm圆管内旋转流切向速度特征的实验研究[J].实验流体力学,2010,24(6). |
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| 作者姓名： | 宋健斐 王甜 徐国 徐俊 魏耀东 |
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| 作者单位： | 中国石油大学(北京)重质油国家重点实验室,北京,102249 |
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| 基金项目： | 国家高技术研究发展计划项目(2007AA061702); 国家自然科学基金(20906100) |
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| 摘 要： | 采用热线风速仪(HWA,Hot Wire Anemometry)测量了D300mm×2000mm圆管内旋转流切向瞬时速度随时间的变化特征。测量结果表明在圆管的中心区域,瞬时切向速度随时间的波动变化较大,而靠近边壁区域瞬时切向速度随时间的波动变化较小,中心区域瞬时切向速度的脉动幅值远大于壁面区域的脉动幅值。通过对瞬时切向速度进行频谱分析可知,瞬时切向速度的波动频率沿径向和轴向基本一致,但在出口区域频率有所增大,圆管内的瞬时切向速度出现低频波动是旋转流的摆动导致的。
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| 关 键 词： | 圆管 旋转流 流场 稳定性 热线风速仪 |
Experimental study of the real tangential velocity in the circular pipe with D300mm×2000mm by HWA |
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| SONG Jian-fei,WANG Tian,XU Guo,XU Jun,WEI Yao-dong.Experimental study of the real tangential velocity in the circular pipe with D300mm×2000mm by HWA[J].Experiments and Measur in Fluid Mechanics,2010,24(6). |
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| Authors: | SONG Jian-fei WANG Tian XU Guo XU Jun WEI Yao-dong |
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| Institution: | SONG Jian-fei,WANG Tian,XU Guo,XU Jun,WEI Yao-dong(State Key Laboratory of Heavy Oil Processing,China University of Petroleum,Beijing 102249,China) |
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| Abstract: | The real tangential velocity of swirling flow in the circular pipe with the diameter 300mm and the length 2000mm was measured by using Hot Wire Anemometry(HWA).The results show the tangential velocity fluctuates obviously in the center region of the circular pipe,and a little fluctuation near the wall of the circular pipe.The amplitude in the center region is higher than that near the wall.By Fast Fourier Transform(FFT) to the real tangential velocities,the frequencies are similar along the radial direction... |
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| Keywords: | circular pipe swirling flow flow field stability HWA |
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