Modélisation et simulation des écoulements en situations industrielles. Exposé de synthèse

Hieu, Ha Minh

doi:10.1051/lhb/1987046

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2023

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“…The turbulent viscosity can be determined by using Prandtl-Kolmogrov's formula (1942), and the vertical diffusivity coefficients for the salinity and the turbulent energy are calculated by [24,25]:…”

Section: Discussionmentioning

confidence: 99%

A 3D Numerical Study on the Tidal Asymmetry, Residual Circulation and Saline Intrusion in the Gironde Estuary (France)

Pham Van Bang,

Phan,

Guillou

et al. 2023

Water

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A full 3D numerical model is used for studying tidal asymmetry, estuarine circulation, and saline intrusion in the Gironde estuary. The model is calibrated and verified using the data measured during two field surveys in the Gironde estuary. Harmonic analysis of numerical results is proposed to understand how the superposition of M2, M4 and M6 components generate a complex estuarine circulation and salinity intrusion in the Gironde estuary. The numerical results show that the M6 component plays a significant role as important as the M4 one in modifying the nature of tidal asymmetry, especially in the Gironde upper estuary. In this case, the use of the phase lag between M2 and M4, neglecting M6, to predict the tidal asymmetry nature could produce errors. The effect of asymmetrical tides on saline intrusion and residual circulation is specifically discussed here.

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Section: Discussionmentioning

confidence: 99%