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MODEL VERIFICATION ON 3D TIDAL CURRENT ANALYSIS IN TOKYO BAY
Author(s) -
KODAMA TOSHIO,
WANG SAM S. Y.,
KAWAHARA MUTSUTO
Publication year - 1996
Publication title -
international journal for numerical methods in fluids
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 112
eISSN - 1097-0363
pISSN - 0271-2091
DOI - 10.1002/(sici)1097-0363(19960115)22:1<43::aid-fld330>3.0.co;2-w
Subject(s) - bay , forcing (mathematics) , geology , spurious relationship , meteorology , computer simulation , computational fluid dynamics , residual , current (fluid) , marine engineering , tidal model , environmental science , geodesy , mechanics , climatology , engineering , oceanography , mathematics , physics , statistics , algorithm
The results of a research project to verify the newly improved multiple‐ level model for 3D tidal current analysis in Tokyo Bay are presented. The improved multiple‐level model includes additional effects due to Coriolis force, river inflows and wind shear stresses. Furthermore, a new numerical treatment of the open boundary condition was applied which effectively eliminated the spurious reflective waves often generated by various numerical methods simulating free surface flows. The mean (time‐averaged or residual) and tidal currents in Tokyo Bay were simulated as examples to demonstrate the validity and capability of the newly improved multiple‐level model. A series of numerical experiments was conducted to carefully examine the tidal circulations affected by the forcing factors of Coriolis force, river inflows and wind shears, both individually and combined. The numerical results demonstrated that the effects of each forcing term are physically reasonable, with the wind shear effect being the most significant and the case including all forcing terms being in best overall agreement with the field data collected in Tokyo Bay by the Ministry of Transportation. This study has contributed not only to the verification of the newly improved multiple‐level model but also to the enhancement of the accuracy of numerical simulations of three‐dimensional flow in coastal waters by this model.