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2004•Journal of Hydraulic EngineeringRequires access

Numerical analysis on influence of topography on wind-driven current in lake

Zhang Fa-bing, HU Wei-ping

Open publisher page 4 citations

Abstract

The wind-driven current in lakes with various types of bottom under the action of stationary wind is numerically analyzed by using 3-D hydrodynamic model.In the model the σ-coordinate system is adopted.The comparison of the vertical average current field and flow field at different levels for several typical bottom shows that the flow pattern and circulation velocity of wind-driven current are dependent on the shape of lake bottom.The shape of lake bottom significantly affects the flow field at different levels except for the surface flow.The island in lake will greatly change the flow field of wind-driven current.

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What this paper is about

The wind-driven current in lakes with various types of bottom under the action of stationary wind is numerically analyzed by using 3-D hydrodynamic model.In the model the σ-coordinate system is adopted.The comparison of the vertical average current field and flow field at different levels for several typical bottom shows that the flow pattern and circulation velocity of wind-driven current are dependent on the shape of lake bottom.The shape of lake bottom significantly affects the flow field at different levels except for the surface flow.The island in lake will greatly change the flow field of wind-driven current.

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Available abstract

The wind-driven current in lakes with various types of bottom under the action of stationary wind is numerically analyzed by using 3-D hydrodynamic model.In the model the σ-coordinate system is adopted.The comparison of the vertical average current field and flow field at different levels for several typical bottom shows that the flow pattern and circulation velocity of wind-driven current are dependent on the shape of lake bottom.The shape of lake bottom significantly affects the flow field at different levels except for the surface flow.The island in lake will greatly change the flow field of wind-driven current.

Key concepts: Current (fluid), Geology, Flow (mathematics), Ocean current, Circulation (fluid dynamics), Field (mathematics), Meteorology, Mechanics

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