Water exchange in Van Phong bay, Khanh Hoa province by hydrodynamic model

Chung Tran Van; Huan Nguyen Huu; Chien Thai Ngoc

doi:10.15625/1859-3097/16407

Author affiliations

Authors

Tran Van Chung Institute of Oceanography, VAST, Vietnam
Nguyen Huu Huan Institute of Oceanography, VAST, Vietnam
Thai Ngoc Chien Research Institute for Aquaculture No. 3, Ministry of Agriculture and Rural Development, Bac Ninh, Vietnam

DOI:

https://doi.org/10.15625/1859-3097/16407

Keywords:

Water exchange, tide, current, two-dimensional (2D) nonlinear model, finite element method (FEM).

Abstract

The analysis of the average wind field from 1979 to 2018 showed that in the Van Phong bay area, the hydrodynamic process is mainly influenced by tidal currents when the frequency of weak wind accounts for a high proportion and the wind regime is controlled entirely by locality and less likely to alter tidal currents significantly. Based on the shallow water hydrodynamic finite element model (FEM), a two-dimensional hydrodynamic model has been developed for Van Phong bay to study hydrodynamic features, especially exchange capacity of seawater with the open sea. The results show that the daily average daily exchange of water in Van Phong bay is about 1,845.46 × 106 m³/day, equivalent to 34.7% water volume in the bay. In the rainy season, the typical daily average water exchange in Van Phong bay is about 2,136.04 × 106 m³/day, equivalent to 43.19% of the volume of water in the bay. In the dry season, the typical daily average total water exchange in Van Phong bay is about 1,825.56 × 106 m³/day, corresponding to 34.35% of water volume in the bay.

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References

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