含变涡动系数的超浅海风暴潮模型
AN ULTRA-SHALLOW WATER STORM SURGE MODEL WITH VARIABLE EDDY VISCOSITY
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摘要: 超浅海风暴潮模型提出后[2],对渤海风潮,作为超浅海问题,进行了数值研究[1]。其结果的分析和观测资料的比较都表明了该模型有一定的应用价值;故,对超浅海风暴潮模型作进一步的探讨是有一定意义的。尤其因为我国是一个多浅水域和多风暴潮的国家,这种研究就具有更重要的意义。Abstract: A well-mixed ultra-shallow water storm surge model with eddy viscosity which is a physically acceptable arbitrary function of depth is developed.The empirical linear law of bottom friction is derived,which provides a functional relationship between the eddy viscosity and the turbulence damping coefficient.An approach for establishing asymptotic vertical profiles of the eddy viscosity is proposed.Currents are estimated and compared with ones in the case of constant eddy viscosity.A theoretical estimation of time lag between the surge and the wind stress in a stage of quasistationary development of the surge shows agreement in order of magnitude with observed data.
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孙文心、冯士筰、奏曾灏.超浅海风暴潮零阶模型的数值计算Ⅰ,海洋学报,1(1979).2.193-211. 秦曾灏、冯士筰,浅海风暴潮动力机制的初步研究,中国科学,(1976),1,64-78;或SCIENTIA SffNCA,ⅩⅧ(1975),2,242-281. Davies,A.M.,Three-dimensional model with depthvaryiag eddy viscosity,Bottom Turbulence,ESPC,1977.27-48. Groen,P.&Groves,C.W.,Surges,The Sea,1,Ch.17.ISP,1962,611-648. Hansen,W.,Tides,The Sea,1.Ch.23,ISP,1962,764-801. Heaps,H.S.,On the numerical solution of the three-dimensional hydrodynamical equations for tides and storm surges,Mèmoires SociétéRoyale des Sciences de Liege,6e sérieteriel,1971.143-180. Hinze,J.O.,Turbulence,Mcgraw-Hill Sook Company,lnc,1959. Keulegan,G.H.,The form factor in wind-tide formulas,Natl.Bur.Std(U.S.),Ann,Rept.No.1835,1952. Nihoul,J.C.J.,Three-dimensional model of tides and storm surges in a shallow well-mixed continental sea,Dyn.Atmos.Oceans.,2(1977),29-47. -
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