Establishment and verification of mathematical model for improvement of water quality in a river network in the northwest part of Shanghai's Qingpu urban area;

Method for calculation of water demand by pollutant dilution and purification in river networks and its application to the Yangtze River-Taihu Lake Water Transfer Project;

Solution and application of convection transport problem for river network;

Study on 1D model of unsteady flow and sediment of river networks;

An efficient,accurate and applicable numerical model for unsteady flows in river networks;

Study on intelligent operation aided decision-making model of sluices in river networks;

Research on calculation mode and calculation method for river systems node;

Research of water-sediment numerical model for complex river systems;

Flow numerical model for river systems;

Comparison of algorithms for extracting drainage network from grid-based digital elevation model;

The research on drainage networks fractal by GIS;

It is shown that there is almost no different between drainage networks derived by two methods,but divides and areas are different.

Water quality simulation for gate-controlled river net under influence of tides;

Intelligence simulation technique for river net flow and its application;