Three-Dimensional Numerical Model for Flow with Silt Protector

J. Ocean Eng. Technol. 2008;22(3):1-7.

Hong Nam-Seeg,Kim Ga-Ya,Kang Yoon-Koo

Division of Civil Engineering Dang-A University,Department of Urban Engineering Dang-Eui University,Engineering Construction Group Samsung Corporation

오탁방지막이 설치된 3차원 흐름 수치모델

홍남식,김가야,강윤구

동아대학교 토목공학부,동의대학교 도시공학과,(주)삼성물산 건설부문

Keywords: Silt protector, Loss coeffient, Silt curtain, Head difference$sigma$-coordinate

핵심용어: 오탁방지막, 손실계수, 막체, 수위차$sigma$좌표계

Abstract

In this study, a mathematical model for flaw with silt protector is proposed that adds a second-order energy loss term in the momentum equation. The three-dimensional numerical model was developed based on mathematical models and verified through comparison with flume test results. Loss coefficients were evaluated through the flume tests and applied to the numerical model. It was found through the investigation of various example cases that the downstream flow pattern was affected mainly by penetration of the silt curtain, not by the approach velocity, and also that the blocking effect of velocity was increased by the increase in mesh density of the silt curtain, below a certain mesh density. The blocking effect did not increase further above a certain mesh density.