J. Ocean Eng. Technol. Search

CLOSE


J. Ocean Eng. Technol. 1998;12(2):111-120.
Study on the Settling Process of Cohesive Sediment
Sin, Dong-Su;Bae, Gi-Seong;
Gyeongsang National University;Gyeongsang National University;
점착성 퇴적물의 침강특성에 관한 연구
신동수;배기성;
경상대학교;경상대학교;
Key Words: Cohesive Sediment, Suspended Concentration, Settling Velocity, Flocculation, Mud, (��)
핵심용어: 점착성퇴적물, 부유농도, 침강속도, 응집
Abstract
Laboratory settling experiments (column, recirculating flume) were conducted for further understanding of the physical processes of cohesive sediment transport. In still water experiments, the growth rate of flocculation is dependent upon the initial suspended concentration. Consequently, the settling velocity increases with concentration of flees. In flocculation settling regime, the exponent n in the settling velocity, $w_s=kC^n$, for Nakdong estuary mud was obtained empirically. The exponents were found to be 1.33, and 1.06 for the initial suspended concentrations of 1 g/i and 3 g/t, respectively. In flowing water, experiments for the median settling velocity with Nakdong mud in a recirculating flume were conducted. Settling velocity was found to depend much more strongly on the current velocity than initial concentrations. The temporal variation of suspended concentration increases as current velocity decreases.


ABOUT
ARTICLE CATEGORY

Browse all articles >

BROWSE ARTICLES
AUTHOR INFORMATION
Editorial Office
President Office BD Rm. 1302, 13 Jungang-daero 180beon-gil, Dong-gu, Busan 48821, Republic of Korea
Tel: +82-51-759-0656    Fax: +82-51-759-0656    E-mail: ksoehj@ksoe.or.kr                

Copyright © 2019 by The Korean Society of Ocean Engineers. All rights reserved.

Developed in M2community

Close layer
prev next