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各向同性均匀湍流近壁结构及泥沙起动
Homogenous turbulence structure near the wall and sediment incipience
查看参考文献11篇
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文摘
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采用振动格栅产生的各向同性均匀湍流研究了泥沙的起动。应用PTV技术和局部光学放大技术对湍流场进行了测量，发现近壁面湍流动能的指数分布规律。分析了泥沙在均匀同性湍流中的起动机制，并用概率统计理论对泥沙的起动进行了定量的描述。通过测定泥沙起动事件的概率，得到了同种泥沙在不同流动参数下起动的临界湍流动能。 |
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其他语种文摘
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The sediment incipience in homogenous turbulence generated by oscillating grids is studied in this paper. The turbulent flow is measured by using PTV technique. The integral length scale and time scale of turbulence are obtained. The turbulent flow near the wall is measured by local optical magnification. It is found that the turbulent energy near the wall obeys the power law. The mechanism of sediment incipience in homogenous turbulence is analyzed. The dimensionless parameters that affect the sediment incipience are obtained based on by dimensional analysis. The sediment incipience is described by using static theory. The incipient turbulent energy for the same sediment with different flow parameters is calculated by measuring the probability of incipient events. |
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来源
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海洋工程
,2003,21(3):50-55 【核心库】
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关键词
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各向同性均匀湍流
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近壁湍流结构
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泥沙起动
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PTV测速技术
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地址
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中国科学院力学研究所, 北京, 100080
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1005-9865 |
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学科
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海洋学 |
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文献收藏号
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CSCD:1316202
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参考文献 共
11
共1页
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1.
钱宁.
泥沙运动力学,1983
|
被引
505
次
|
|
|
|
|
2.
窦国仁.
水利学报,1960(4):22-31
|
被引
3
次
|
|
|
|
|
3.
Rijin L C.
Journal of Hydraulic Engineering,1997,110(10):1494-1502
|
被引
1
次
|
|
|
|
|
4.
Dey S.
Appl Math Modelling,1996,20:534-539
|
被引
1
次
|
|
|
|
|
5.
Ting F C K.
Journal of hydraulic engineering,2001,127(11):959-978
|
被引
1
次
|
|
|
|
|
6.
Dou X B.
Water resource eingineering 98,1998:198-203
|
被引
1
次
|
|
|
|
|
7.
Thompson S N.
J Fluid Mech,1975,67:349-368
|
被引
1
次
|
|
|
|
|
8.
Hannoun I A.
J Fluid Mech,1988,189:189-209
|
被引
4
次
|
|
|
|
|
9.
Lyn D A.
San Antonio Texas Edited by William H ASCE,1995:609-613
|
被引
1
次
|
|
|
|
|
10.
Huhe Aode.
6~th asian symposium on visualization,2001:417-422
|
被引
1
次
|
|
|
|
|
11.
黄永念.
湍流,1987
|
被引
2
次
|
|
|
|
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