Comparing Two Topography-Following Primitive Equation Models for Lake Circulation

Umlauf, L. and Wang, Yongqi and Hutter, Kolumban :
Comparing Two Topography-Following Primitive Equation Models for Lake Circulation.
[Online-Edition: http://www.sciencedirect.com/science/article/pii/S0021999199...]
In: Journal of Computational Physics, 153 (2) pp. 638-659. ISSN 0021-9991
[Article], (1999)

Official URL: http://www.sciencedirect.com/science/article/pii/S0021999199...

Abstract

We compare two semi-implicit models with topography-following coordinates for the solution of the shallow water equations. The models are identical in horizontal representation, but model A applies a vertical finite difference method and model B a vertical spectral method. Convergence, stability, and performance for different geometries and parameters are compared. We report our experiences gained in lake modelling with these models and give some results of simulations of Lake Ammer in the homogeneous and stratified cases. Different wave phenomena and the basin wide circulations will be discussed.

Item Type:	Article
Erschienen:	1999
Creators:	Umlauf, L. and Wang, Yongqi and Hutter, Kolumban
Title:	Comparing Two Topography-Following Primitive Equation Models for Lake Circulation
Language:	English
Abstract:	We compare two semi-implicit models with topography-following coordinates for the solution of the shallow water equations. The models are identical in horizontal representation, but model A applies a vertical finite difference method and model B a vertical spectral method. Convergence, stability, and performance for different geometries and parameters are compared. We report our experiences gained in lake modelling with these models and give some results of simulations of Lake Ammer in the homogeneous and stratified cases. Different wave phenomena and the basin wide circulations will be discussed.
Journal or Publication Title:	Journal of Computational Physics
Volume:	153
Number:	2
Publisher:	Elsevier Science
Uncontrolled Keywords:	benchmark; stability; shallow water; semi-implicit; lake; circulation; limnology; spectral
Divisions:	Fachbereich Maschinenbau > Strömungsdynamik Fachbereich Maschinenbau
Date Deposited:	23 Aug 2011 14:53
Official URL:	http://www.sciencedirect.com/science/article/pii/S0021999199...
Additional Information:	doi:10.1006/jcph.1999.6298
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