波-流联合作用场中流的等效作用研究

基金项目: 国家自然科学基金(编号:59579014)

Study on equivalent effect of flow in wave-current field

Department of Oceam Engineering and Naval Architecture, tianjin University, Tianjin 300072

摘要: 针对波-流相互作用问题中的流速沿水深非线性分布的水流处理方法问题,提出了“等效均匀流”概念和相应理论,使非线性分布的水流作用等效为相应的均匀流作用,从而使问题大大简化.无论是二维顺、逆流问题还是三维波一流斜交折射问题,非均匀流都可以基于本文方法和理论予以近似处理,以采用等效均匀流概念计算的小尺度垂直桩桩的波一流联合作用力计算为例,对该理论和方法的应用作了初步的探讨和验证.
- 波浪 /
- 水流 /
- 相互作用 /
- 等效均匀流-波流力
Abstract: The concept of equivalent uniform current is presented.Inorder to deal with the problem of interaction between wave and nonumiform current the nonuriform current can approximately be treated as the equivalent unifomm current by this method.It is simplified to compute the wave and current which are arbitrary varying along water depth.The wave-current forces on small vertical cylinder have been calculated and the results are consistent with the precise solutions very well.
- Wave /
- current /
- interaction /
- equivalent uniform current

Baddour R E,Song S.On the interaction between waves and currents.Ocean Eng,.1990,(1/2):1-21

Skop P A.An approach to analysis of interaction of surface waves with depth varying current fields.Appl.Math.Mod,1987,(11):432-437

Kirby J T,Chen T M.Surface waves on vertically sheared flows:approximate dispersion relations.J.Geophys.1989,(94):1013-1027

Hedges T S,Anastasiou K,Gabriel D.Interaction of random waves and currents.J.Waterway Port Coastal Ocean Eng.,1985,(111):275-288

练继建,赵子丹.波-流共存场中全水深水流流速分布.海洋通报,1994,(3):1-16

Hedges T.S,Lee B W.the equivalent uniform cuttertt in wave-current aanputation.Coastal Eng.,1992,(16):301-311

Thomas G P.Wave-current interactions:an experimental and mumerical study——Part 1.Linear wave.J.Fluid Mech.,1981,110,457-474

李玉成,张福然.作用于垂直桩柱上的波浪水流力.海洋学报,1986,8(3):751-761

马明根.近海工程设计与计算.上海:同济大学出版社,1992