| 关于边界层湍流能量耗散率的研究 |
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| 引用本文： | 郝芹.关于边界层湍流能量耗散率的研究[J].河南科学,2011,29(1):6-9. |
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| 作者姓名： | 郝芹 |
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| 作者单位： | 华北水利水电学院,水利职业学院,郑州,450008 |
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| 摘 要： | 应用PIV系统对湍流边界层内的耗散率标度律进行了实验研究,结果显示,对不同尺度上和3个不同法向位置湍滴耗散率标度律的湍流耗散主要发生在小尺度上,即湍流耗散率标度律在小尺度上具有普适性.并且随着尺度的不同,近壁面小尺度上的湍流耗散比较明显,远壁面上的湍流耗散率较小.
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| 关 键 词： | 标度律 能量耗散率 PIV |
Studies on Energy Dissipation Rate in Turbulent Boundary Layer |
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| Hao Qin.Studies on Energy Dissipation Rate in Turbulent Boundary Layer[J].Henan Science,2011,29(1):6-9. |
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| Authors: | Hao Qin |
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| Institution: | Hao Qin(North China University of Water Conservancy And Electric Power,Zhengzhou 450008,China) |
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| Abstract: | In the thesis PIV system is used to measure the vector in order to research energy dissipation.Experimental result Experimental investigation indicates that the scaling law of energy dissipation rate is universal at small scale.The turbulent dissipation is more obvious in small scale than in large scale with different wall distance. |
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| Keywords: | PIV |
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