Abstract: The region across the Hangzhou Bay is one of the most economically developed areas in China.There are lots of projects constructed in the Hangzhou Bay,which change the transport of current and sediment in the water area.The sediment transport in the Hangzhou Bay,a huge tidal estuary,is very complicated due to the effects of river runoff,wave and tide.The cohesive sediment is reciprocating its motion under the force of tide flow which comes dominantly from the Yangze River.Although 2D model has succeeded in ...