Two-Dimensional Numerical Modelling of Bores in the Qiantang Estuary

Histories of Gores in the Qiantang Estuary,are modelled by using a two-dimensional finite-volume,Osher scheme,and a discontinuity-fitting method. The algorithm ensures mass and momentum conservation,and can be applied to cases with irregular morphography,and moving boundaries. Based on a simplification a line-bore,the modelling can be done on a coarse mesh by a microcomputer,After having calibrated against a typical semi-diurnal tide,the model is used to predict the succeeding semi-diurnal tide for validating its reasonability and applicability.