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A numerical study of wind induced water currents

Tsanis Giannis, Wu, Jingzi, 1701-1754

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Extent7 pagesen
TitleA numerical study of wind induced water currentsen
CreatorTsanis Giannisen
CreatorΤσανης Γιαννηςel
CreatorWu, Jingzi, 1701-1754en
Content SummaryA circulation model is developed and used to study wind-induced currents. A new analytical solution, which is independent on the ratio of bottom to surface shear velocity or shear stress, is derived for the steady shear-induced turbulent flow. The simulations for steady countercurrent flows are calibrated with the corresponding analytical solutions, and verified using the experimental results obtained in air-water tunnels. With the aid of the numerical model, the developing process of a shear-induced turbulent flow, the wind-induced setup and seiche are examined. Sensitivity studies reveal that the horizontal eddy viscosity is insignificant, while the magnitude and distribution of vertical eddy viscosity is very important to simulate the vertical velocity distribution. A high-resolution vertical grid must be used near the surface and bottom regions to obtain the detailed and accurate current structure. The results from this study indicate the importance of the three-dimensional circulation model in studying the vertical structure of the wind-induced current, and gives credibility in applying this model in lakes and estuaries. en
Type of ItemPeer-Reviewed Journal Publicationen
Type of ItemΔημοσίευση σε Περιοδικό με Κριτέςel
Date of Item2015-10-09-
Date of Publication1995-
Bibliographic CitationJ. Wu, I. K. Tsanis,. ”Numerical study of wind-induced water currents,” J. Hydraul. Eng.,vol. 121 ,no. 5, pp. 388–395,1995. doi:10.1061/(ASCE)0733-9429(1995)121:5(388)en