TY - GEN
T1 - Localized sigma coordinates for the vertical structure of hydrodynamic models
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 -