Numerical Simulation of Tidal Flow in Shallow Water Bay by Finite Difference Method

by Xiaoyong Zhan, Univ of Padova, Italy,

Document Type: Proceeding Paper

Part of: Estuarine and Coastal Modeling


A two-dimensional finite difference numerical model to solve the vertically integrated non-linear shallow water equations has been developed using an Alternating Direction Implicit (ADI) scheme for description of tidal flows in shallow water bays. The numerical technique for treating nonlinear problem is discussed and computer software is designed to reduce storage and costs of computation. Application to Taipong Bay, China is presented. Taipong Bay is situated on the north of the South China Sea, bounded in the east by Taipong Peninsula, in the north by Senzhen Economic Zone of China, in the west by Hong Kong, and communicating with the South China Sea via a ten kilometer width channel. The computed results agree quite well with the observations available. Based on the computed results and observed data, the tidal level, tidal current, and residual current in the bay are discussed. Applications to environmental problems along the coast of the bay are also mentioned briefly.

Subject Headings: Tides | Numerical models | Bays | Flow simulation | Shallow water | Two-dimensional models | Water flow | Numerical methods | China | Asia | South China Sea | Hong Kong

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