| A STUDY OF OSCILLATING FLOWS OVER PROPAGATING RIPPLES:PART I. STEADY STREAMING |
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| 作者姓名： | Lu Xi-yun |
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| 作者单位： | Lu Xi yun Department of Modern Mechanics，University of Science and Technology of China，Hefei，230026，P.R.China |
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| 摘 要： | 1. ＩＮＴＲＯＤＵＣＴＩＯＮＯｓｃｉｌｌａｔｉｎｇｆｌｏｗｓｏｖｅｒｐｅｒｉｏｄｉｃｒｉｐｐｌｅｓａｒｅｏｆｐｒａｃｔｉｃａｌａｓｗｅｌｌａｓｓｃｉｅｎｔｉｆｉｃｉｎｔｅｒｅｓｔｂｅｃａｕｓｅｏｆｔｈｅｉｒｒｅｌｅｖａｎｃｅｔｏｂｅａｃｈｐｒｏｃｅｓ...
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| 关 键 词： | oscillating flow ripple |
A STUDY OF OSCILLATING FLOWS OVER PROPAGATING RIPPLES:PART I. STEADY STREAMING |
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| Lu Xi-yun.A STUDY OF OSCILLATING FLOWS OVER PROPAGATING RIPPLES:PART I. STEADY STREAMING[J].Journal of Hydrodynamics,1999,11(4):15-22. |
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| Authors: | Lu Xi-yun |
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| Abstract: | Oscillating flows over periodic ripples are numerically investigated by solving the two-dimensional time-dependent incompressible Navier-Stokes equations in curvilinear coordinates for a wider range of the parameters of KC, Re and ε, in particular for the oscillatory flow over propagating ripples. In the oscillating flows over periodic ripples, circulation cells due to the streaming effect are formed, which can help redistribute suspended sediments. In the present study, the circulation patterns for both stationary rigid ripples and propagating ripples are investigated. The energy dissipation in the flow field is also discussed. |
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| Keywords: | oscillating flow ripple steady streaming separation flow |
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