Effects of bridge pier friction on flow reduction in a navigation channel

Authors

Kwok Leung Pun, Technological and Higher Education Institute of Hong Kong, Vocational Training CouncilFollow
S. Law

Staff Page Link

Prof PUN Kwok Leung

Document Type

Journal Article

Publication Date

2015

Keywords

Pier friction, Flow reduction, Hydrodynamic model, Drogue tracking

Abstract

The Rambler Channel is an 8-kilometer long navigation waterway. A number of bridges are built on piers over the channel; the presence of bridge piers changes the nearby flow regime and induces friction in the ambient tidal currents. This paper presents a hydrodynamic model to study the effects of bridge pier friction on flow reduction in the Rambler Channel. Energy losses due to the bridge piers are estimated by introducing additional quadratic friction terms into momentum equations. Comparisons of the tidal flow patterns, changes in flow rate through the channel, and flow paths in the surface water layer by drogue tracking simulations for situations with and without bridges are presented.

Source Publication

Journal of Water Resource and Hydraulic Engineering

Volume Number

4

Issue Number

4

ISSN

2306-7705

First Page

326

Last Page

331

Recommended Citation

Pun, K.,& Law, S. (2015). Effects of bridge pier friction on flow reduction in a navigation channel. Journal of Water Resource and Hydraulic Engineering, 4 (4), 326-331. Retrieved from https://repository.vtc.edu.hk/thei-fac-sci-tech-sp/370