A Study on the Suspended Sediment Transport in the Nakdong Estuary

J. Ocean Eng. Technol. 1995;9(1):120-131.

낙동강 하구에서의 부유사 거동에 관한 연구

김재중,김기철,이정만

동아대학교 해양공학과,동아대학교 해양공학과,동아대학교 해양공학과

Keywords: Suspended Sediment, Diffusion Model, Flow Model, Advective Disperdion, Multi-Stage-Implict Method

핵심용어: 부유사, 확산모델, 흐름모델, 이류확산, 다단 음해법

Abstract

Numerical simulations on the suspended sediment transport in the Nakdong Estuary are carried out Uncoupled flow model and diffusion model of which the governing equations are two-dimensional depth integrated equations are used int his study. Four cases are tested in this numerical simulations in which the Gaduk waterway open boundary condition and Nakdong Estuary barrage boundary condition are considered as the boundary conditions. The simulated results are compared with the measured data which were obtained by NEDECO at hadan site on 1981.2.19. and by Dong-A university at one station in the study area on 1993.4.3. and show a good agreement with them. The construction of the Nakdong Estuary Barrage may affect to reduce the current near Jinudo an Daemadeung and the suspended sediment inflowed from the upstream in the wet season seems to be transported to the Dadae.