Localized sigma coordinates for the vertical structure of hydrodynamic models

Andre B. Fortunato; Antonio M. Baptista

Localized sigma coordinates for the vertical structure of hydrodynamic models

Andre B. Fortunato, Antonio M. Baptista

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

This paper analyzes the use of localized sigma coordinates in the numerical solution of the vertical structure of coastal flows. We show, through a combination of truncation error analysis and 2D (vertical) numerical experimentation, that localized sigma coordinates have two important advantages over the more traditional domain-wide sigma coordinates: the evaluation of horizontal gradients of density in the presence of steep bottom slopes is more accurate, and the vertical discretization can be freely placed where it is needed. These two advantages appear to far out weight, for practical situations, the restrictions imposed by the fact that the localized sigma coordinates are only conditionally consistent.

Original language	English (US)
Title of host publication	Proc 3 Int Conf Estuarine Coastal Model 3
Editors	Malcolm L. Spaulding, Keith Bedford, Alan Blumberg, Ralph Cheng, Craig Swanson
Publisher	Publ by ASCE
Pages	323-335
Number of pages	13
ISBN (Print)	0872629759
State	Published - 1994
Externally published	Yes
Event	Proceedings of the 3rd International Conference on Estuarine and Coastal Modeling III - Oak Brook, IL, USA Duration: Sep 8 1993 → Sep 10 1993

Publication series

Name	Proc 3 Int Conf Estuarine Coastal Model 3

Other

Other	Proceedings of the 3rd International Conference on Estuarine and Coastal Modeling III
City	Oak Brook, IL, USA
Period	9/8/93 → 9/10/93

ASJC Scopus subject areas

Engineering(all)

Cite this

Localized sigma coordinates for the vertical structure of hydrodynamic models. / Fortunato, Andre B.; Baptista, Antonio M.
Proc 3 Int Conf Estuarine Coastal Model 3. ed. / Malcolm L. Spaulding; Keith Bedford; Alan Blumberg; Ralph Cheng; Craig Swanson. Publ by ASCE, 1994. p. 323-335 (Proc 3 Int Conf Estuarine Coastal Model 3).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Fortunato, AB & Baptista, AM 1994, Localized sigma coordinates for the vertical structure of hydrodynamic models. in ML Spaulding, K Bedford, A Blumberg, R Cheng & C Swanson (eds), Proc 3 Int Conf Estuarine Coastal Model 3. Proc 3 Int Conf Estuarine Coastal Model 3, Publ by ASCE, pp. 323-335, Proceedings of the 3rd International Conference on Estuarine and Coastal Modeling III, Oak Brook, IL, USA, 9/8/93.

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abstract = "This paper analyzes the use of localized sigma coordinates in the numerical solution of the vertical structure of coastal flows. We show, through a combination of truncation error analysis and 2D (vertical) numerical experimentation, that localized sigma coordinates have two important advantages over the more traditional domain-wide sigma coordinates: the evaluation of horizontal gradients of density in the presence of steep bottom slopes is more accurate, and the vertical discretization can be freely placed where it is needed. These two advantages appear to far out weight, for practical situations, the restrictions imposed by the fact that the localized sigma coordinates are only conditionally consistent.",

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AU - Fortunato, Andre B.

AU - Baptista, Antonio M.

PY - 1994

Y1 - 1994

N2 - This paper analyzes the use of localized sigma coordinates in the numerical solution of the vertical structure of coastal flows. We show, through a combination of truncation error analysis and 2D (vertical) numerical experimentation, that localized sigma coordinates have two important advantages over the more traditional domain-wide sigma coordinates: the evaluation of horizontal gradients of density in the presence of steep bottom slopes is more accurate, and the vertical discretization can be freely placed where it is needed. These two advantages appear to far out weight, for practical situations, the restrictions imposed by the fact that the localized sigma coordinates are only conditionally consistent.

AB - This paper analyzes the use of localized sigma coordinates in the numerical solution of the vertical structure of coastal flows. We show, through a combination of truncation error analysis and 2D (vertical) numerical experimentation, that localized sigma coordinates have two important advantages over the more traditional domain-wide sigma coordinates: the evaluation of horizontal gradients of density in the presence of steep bottom slopes is more accurate, and the vertical discretization can be freely placed where it is needed. These two advantages appear to far out weight, for practical situations, the restrictions imposed by the fact that the localized sigma coordinates are only conditionally consistent.

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M3 - Conference contribution

AN - SCOPUS:0027961923

SN - 0872629759

T3 - Proc 3 Int Conf Estuarine Coastal Model 3

SP - 323

EP - 335

BT - Proc 3 Int Conf Estuarine Coastal Model 3

A2 - Spaulding, Malcolm L.

A2 - Bedford, Keith

A2 - Blumberg, Alan

A2 - Cheng, Ralph

A2 - Swanson, Craig

PB - Publ by ASCE

T2 - Proceedings of the 3rd International Conference on Estuarine and Coastal Modeling III

Y2 - 8 September 1993 through 10 September 1993

ER -

Localized sigma coordinates for the vertical structure of hydrodynamic models

Abstract

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Other

ASJC Scopus subject areas

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