| 锯齿型通道流动与换热的自维持振荡实验研究 |
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| 引用本文： | 卢玫,孙大康,李凌,余敏.锯齿型通道流动与换热的自维持振荡实验研究[J].工程热物理学报,2010(2). |
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| 作者姓名： | 卢玫 孙大康 李凌 余敏 |
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| 作者单位： | 上海理工大学动力工程学院; |
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| 基金项目： | 国家自然科学基金项目(No.50476080);;上海市重点学科建设项目支助(No.J50501) |
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| 摘 要： | 本文对锯齿型通道内流动与换热的自维持振荡特性进行了实验研究。从可视化实验中观察到,Re300时,流场随时间几乎没有明显的变化;Re300,流动出现了明显的回流现象,且随着Re数增大,回流形成的涡增大,流动产生的涡的位置随时间呈有规律的周期性变化;在恒热流边界条件下,通道上、下壁面温度沿流动方向的变化与数值模拟所得到的Nu数、壁温的变化规律一致。
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| 关 键 词： | 锯齿型通道 流动和换热 自维持振荡 可视化实验 |
THE EXPERIMENTAL STUDY OF THE SELF-SUSTAINED OSCILLATION OF FLOW AND HEAT TRANSFER IN A CORRUGATED CHANNEL |
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| LU Mei SUN Da-Kang LI Ling YU Min.THE EXPERIMENTAL STUDY OF THE SELF-SUSTAINED OSCILLATION OF FLOW AND HEAT TRANSFER IN A CORRUGATED CHANNEL[J].Journal of Engineering Thermophysics,2010(2). |
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| Authors: | LU Mei SUN Da-Kang LI Ling YU Min |
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| Institution: | School of Energy & Power Engineering;University of Shanghai for Science and Technology;Shanghai 200093;China |
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| Abstract: | In this paper,the self-sustained oscillation character of flow and heat transfer in the corrugated channel was studied by experimental method.It was obvious according to the visual experiment:there was almost no visible variation with time in the flow field when the Reynolds number was below 300.With the increase of Reynolds number and exceed 300 the Back Layering was obviously observed in the picture of the flow.And also the position of the swirl had a cyclical variation with time.Under the condition of co... |
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| Keywords: | corrugated channel flow and heat transfer self-sustained oscillation the visual experiment |
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