波、流共同作用下的泥沙起动
Initiation of sediment movement for a wave-current coexistent system
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摘要: 对波、流共存时的床面剪切力及摩阻系数等作了探讨,根据泥沙起动试验,建立了泥沙起动Shields曲线,导出了波、流共同作用下层流和紊流时的泥沙起动公式和起动波高、起动水深.Abstract: Bed shear stress and friction coefficient have been studied.Based on the critical condition for the initiation of sediment movement by means of a lot of test data for a wave-current coexistent system,formulas of sediment initial movement for both laminar and turbulent have been set up,and wave height and water depth for initiation of sediment movement are given as well.
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O'CONNOR B A,YOO D.Mean bed friction of combined wave-current flow[J].Coastal Eng,1988,12:1-21. 练继建.波浪、水流与淤泥质底床的相互作用[D].天津:天津大学.1993. DAVIES A G,SOULSBY R L,KING K H.A numerical model of combined wave and current motion[J].Ocean Eng,1988,12(5):387-423. 吴永胜.波浪、水流作用下的紊动边界层数值分析[D].天津:天津大学,1999. 曹祖德,唐士芳,李蓓,波、流共存时的床面剪切力[J].水道港口,2001,22(2):56-60 JONSSON I G.Wave boundary layers and friction factors[A].Proc 10th IntConf CoastalEng:Vol.1[C].ASCE,1996.127-148 -
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