A two-phase numerical model for sediment transport prediction under oscillatory sheet flows

Li, Ming, Pan, Shunqi ORCID: https://orcid.org/0000-0001-8252-5991 and O'Connor, Brian A. 2008. A two-phase numerical model for sediment transport prediction under oscillatory sheet flows. Coastal Engineering 55 (12) , pp. 1159-1173. 10.1016/j.coastaleng.2008.05.003

Full text not available from this repository.

Abstract

To predict sediment transport under oscillatory sheet flow condition, especially for fine sand, is still a challenging research subject in coastal engineering. This paper describes a newly-developed numerical model based on two-phase theory with the use of a one-equation turbulence closure, and its applications in predicting fine sediment suspension in near-prototype oscillatory sheet flow conditions. Model results were compared with comprehensive laboratory measurements of flow velocity and sediment concentration under both symmetrical and asymmetrical oscillatory sheet flows from a large-scale water tunnel. Good agreements between the model results and measurements were achieved and the results demonstrated that the model is capable of reproducing detailed characteristics of sediment entrainment process in the sheet flow regime. The comparisons also revealed the fact that the concentration peaks at flow reversal is associated with the strong vertical sediment transport flux in the pickup layer, which has been widely observed in many laboratory experiments. The effects of flow reversal events on total sediment transport were also discussed.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Engineering
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Uncontrolled Keywords:	Two-phase; Sediment transport; Sheet flow; Waves; Erosion depth; Pickup layer; Flow reversal
Publisher:	Elsevier
ISSN:	0378-3839
Last Modified:	20 Oct 2022 10:00
URI:	https://orca.cardiff.ac.uk/id/eprint/33849

Citation Data

Cited 43 times in Scopus. View in Scopus. Powered By Scopus® Data

Actions (repository staff only)

Edit Item