Processing on key parameter in FVCOM and its application on tidal bore simulation

CHENG Wen-long; PAN Cun-hong; WU Xiu-guang

doi:10.3969/j.issn.1001-909X.2017.01.004

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Journal of Marine Sciences ›› 2017, Vol. 35 ›› Issue (1) : 33-40. DOI: 10.3969/j.issn.1001-909X.2017.01.004

Processing on key parameter in FVCOM and its application on tidal bore simulation

CHENG Wen-long^1,2, PAN Cun-hong^*1,2, WU Xiu-guang^1,2

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Abstract

The evolution of tidal bore in Qiantang Estuary were successfully reproduced by applying FVCOM model through improving the sea bed roughness coefficient and setting suitable background vertical eddy viscosity. Sea bed roughness coefficient,calculated using the Manning formulation, is between 0.000 2~0.002 9 with the varying depth. The background vertical eddy viscosity is 1×10^-4 m²/s. The simulation well reproduces the tidal bore arriving time, tidal level, setup height, horizontal velocity magnitude and vertical profile, which implies the choice of parameters such as the bed roughness coefficient and background vertical eddy viscosity are reasonable. The procedure could be extended to simulate the 3D tidal movement for tidal bores.

Key words

tidal bore / FVCOM / 3D mathematic simulation / roughness coefficient / vertical eddy viscosity

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CHENG Wen-long, PAN Cun-hong, WU Xiu-guang. Processing on key parameter in FVCOM and its application on tidal bore simulation[J]. Journal of Marine Sciences. 2017, 35(1): 33-40 https://doi.org/10.3969/j.issn.1001-909X.2017.01.004

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