HR: 11:20h
AN: OS42B-01    [Abstracts]
TI: Numerical Studies of Flow Over a Sill: Sensitivity of the Non-Hydrostatic Effects to the Grid Size
AU: * Berntsen, J
EM: jarle.berntsen@math.uib.no
AF: Department of Mathematics, University of Bergen, Johannes Brunsgate 12, Bergen, N- 5008, Norway
AU: Xing, J
EM: jxx@pol.ac.uk
AF: Proudman Oceanographic Laboratory, Joseph Proudman Building, 6 Brownlow Street, Liverpool, L3 5DA, United Kingdom
AU: Davies, A M
EM: amd@pol.ac.uk
AF: Proudman Oceanographic Laboratory, Joseph Proudman Building, 6 Brownlow Street, Liverpool, L3 5DA, United Kingdom
AB: A non-hydrostatic terrain following model in cross sectional form is applied to study the tidal inflow near a sill in an idealized stratified fjord. There is a transfer of energy from the barotropic tide to internal waves and then to irreversible mixing. The range of length scales involved goes from the scale of the forced tide to scales associated with wave breaking. Methods for computing non-hydrostatic pressure in terrain following models will be discussed. The sensitivity of the non-hydrostatic pressure effects to the grid size, and in particular the effects on the time mean fields, will be addressed.
DE: 4544 Internal and inertial waves
SC: Ocean Sciences [OS]
MN: 2007 Fall Meeting