Title: A Comparison of Numerical and Laboratory Experiments on Density-Stratified Flows Around a Three-Dimensional Hill
Abstract:Direct comparisons between the results of a numerical model and laboratory experiments are presented for density-stratified flows around an isolated three-dimensional hill. The numerical model integra...Direct comparisons between the results of a numerical model and laboratory experiments are presented for density-stratified flows around an isolated three-dimensional hill. The numerical model integrates the Navier-Stokes equations for incompressible stratified flow using a finite-difference scheme. Numerical calculations were made for Reynolds numbers (based on the hill height) of 100 and 400 and for Froude numbers between 0.5 and 2 as well as for neutrally stratified flow. The laboratory experiments were performed in a small (2.1m long) stratified towing tank, a large (25m long) stratified towing tank, and a meteorological wind tunnel. Experimental results are presented for Reynolds numbers between 100 and 40,000 and for the same Froude numbers as used in the numerical calculations. The numerical model with a Reynolds number of 100 compared best with the large-scale laboratory experiments, although there were substantial differences near the hill surface and in the wake of the hill.Read More
Publication Year: 1990
Publication Date: 1990-01-01
Language: en
Type: article
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Cited By Count: 3
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