A terrain following crystal grid finite volume ocean circulation model
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Authors
Fan, Chenwu
Chu, Peter C.
Subjects
Finite volume
crystal grid
integral equations
hydrostatic balance
terrain-following coastal model
crystal grid
integral equations
hydrostatic balance
terrain-following coastal model
Advisors
Date of Issue
2004
Date
2004
Publisher
Language
Abstract
A three dimensional hydrostatic finite volume ocean model has been developed to
solve the integral dynamical equations. Since the basic (integral) equations are solved
for finite volumes rather than grid points, the flux conservation is easily enforced,
even on arbitrary meshes. Both upwind and high-order combined compact schemes
can be incorporated into the model to increase computational stability and accuracy.
This model uses a highly distorted grid system near the boundary. The lateral boundaries
of each finite volume are perpendicular to x and y axes and the two vertical boundaries
are not purely horizontal. Four types of finite volumes are designed to follow the
terrain with four (Type-A), three (Type-B), two (Type-C), and one (Type-D) vertices
in the lower surface. Such a terrain-following grid discretization has superior features
to z- and σ-coordinate systems. The accuracy of this model was tested.
Type
Article
Description
Journal of Oceanography, Oceanography Society of Japan, Vol. 60, pp. 945-952.
Series/Report No
Department
Oceanography
Organization
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NPS Report Number
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Format
Citation
Chu, P. C., and C.W. Fan, 2004: A terrain following crystal grid finite volume ocean circulation model (paper download). Journal of Oceanography, Oceanography Society of Japan, 60, 945-952.
Distribution Statement
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This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.