Author(s): Nils Reidar B. Olsen; Dagfinn K. Lysne
Linked Author(s): Nils Reidar B. Olsen
Keywords: Numerical modelling; Computational Fluid Dynamics; Lake circulation; Temperature stratification; Hydrodynamics
Abstract: A 3D numerical model was used to calculate water currents and temperature in Lake Sperillen in Norway in the winter, when the lake was covered with ice. The numerical model solved the Navier-Stokes equations on a 3D unstructured non-orthogonal grid with hexahedral cells. The SIMPLE method was used for the pressure coupling and the k-e model was used to model turbulence, with a modification for density stratification due to the vertical temperature profile. The results were verified with field measurements of temperature in the lake, also indicating the water currents. There was reasonable agreement between calculated results and the measurements.
Year: 1999