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Second Symposium on Turbulence and Shear Flow Phenomena
June, 27-29, 2001, KTH, Stockholm, Sweden

DOI: 10.1615/TSFP2

DNS OF TURBULENT FLOW IN AN OPEN CHANNEL WITH A LONGITUDINALLY RIDGED BOTTOM WALL

pages 383-388
DOI: 10.1615/TSFP2.640
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Краткое описание

A DNS of turbulent channel with a ridged bottom has been carried out to simulate the sand ribbons over the river bed. Two cases are considered; one is a ridged closed channel with ridged top and bottom walls and the other is the one with a ridged bottom and a free top surface. The latter case reproduces well the flow structure around the ridge in the actual river. A low speed streak over the ridge is captured by the conditional sampling and its structure is discussed.

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