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

Kocyigit M., Falconer R.

ADVANCES IN WATER RESOURCES, cilt.27, sa.12, ss.1167-1178, 2004 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 27 Sayı: 12
  • Basım Tarihi: 2004
  • Doi Numarası: 10.1016/j.advwatres.2004.08.004
  • Dergi Adı: ADVANCES IN WATER RESOURCES
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1167-1178
  • Anahtar Kelimeler: wind-induced circulation, lake circulation, numerical modelling, non-hydrostatic pressure, semi-implicit, finite difference method, SIMULATION, STABILITY, PRESSURE, SURFACE, FLOWS
  • Gazi Üniversitesi Adresli: Evet

Özet

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.