Yasuo Kishino


Development research for hydrodynamic environmental simulator

Tokuzo Hosoyamada

As for the fluid, the density and environmental substance are distributed according to the place in the ocean. In such a density stratified fluid, it is said that an internal wave occur. This internal wave changes the bottom flow velocity by generating it to the nearshore waters, and it will promote deposition and resuspension of seabed material.
In this research, I constructed three dimensional hydrodynamic model to calculate from sqort of environmental substance. Especially my research concentrate on behavior of the generation mechanism of this internal wave.
As a result, the effect of the presence of the shape of the topography of the seabed and the stratification or the numbers and force of the winds influencing the generation mechanism of an internal wave became clear. The horizontal flow velocity and perpendicular flow velocity increased along the internal wave. The internal waves effects flow field and enhance transport of substance.