Three-dimensional numerical modelling of wind-driven circulation in a homogeneous lake


Kocyigit M. , Falconer R.

ADVANCES IN WATER RESOURCES, vol.27, no.12, pp.1167-1178, 2004 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 27 Issue: 12
  • Publication Date: 2004
  • Doi Number: 10.1016/j.advwatres.2004.08.004
  • Title of Journal : ADVANCES IN WATER RESOURCES
  • Page Numbers: pp.1167-1178

Abstract

A three-dimensional numerical model has been developed to study wind-induced circulation patterns in a shallow homogeneous lake with a complex bathymetry. The governing equations are the unsteady Reynolds-Averaged Navier-Stokes equations in which the non-hydrostatic pressure distribution has been included. The model was tested against analytical solutions and laboratory data for wind-induced currents and then applied to Esthwaite Water, a small lake in Cumbria, UK. The model was used to study the main model parameters and to generate typical circulation patterns for a variety of conditions in the lake. Simulations showed that a non-hydrostatic pressure distribution did not have any noticeable influence on the overall circulation pattern in the lake. However, comparisons with field data at some measurement stations in the near-shore region with sharply varying bottom topography showed that the hydrodynamic pressure component had some influence on the vertical velocity profile. (C) 2004 Elsevier Ltd. All rights reserved.