Numerical Analysis on Effects of Wind on Flow dynamics and Water Quality in Upstream Area of Nagaragawa Estuary Barrage

Abstract

This study deals with effects of wind on flow dynamics and water quality in upstream area of Nagaragawa Estuary Barrage. Numerical analysis by one-dimensional multi-layered model is executed under various boundary conditions of wind stress and discharge. The simulation results indicate that the effects of the wind stress on the flow behavior and water quality change vary with the wind direction, the wind velocity and discharge conditions due to the barrage gate operation. The phenomena in the real field are also explaned by the simulation results.