Scour Induced by Single and Twin Propeller Jet

Yonggang Cui, Wei-Haur Lam, Tianming Zhang, Chong Sun, Gerard Hamill

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Single and twin ship propeller jets produce scour holes with deposition dune. The scour hole has a maximum depth at a particular length downstream within the propeller jet. Existing equations are available to predict maximum scour depth and the corresponding scour length downstream. Experiments conducted with various physical propeller models, rotational speeds, propeller-to-propeller distances and bed clearances are presented. The measurements allowed a better understanding of the mechanism of temporal scour and deposition formation for scour caused by single-propeller and twin-propeller. Results show that the propeller jet scour profiles can be divided into three zones, which are the small scour hole, primary scour hole and deposition dune. An empirical 2D scour model is proposed to predict the scour profile for both a single-propeller and twin-propeller using a Gaussian normal distribution.
LanguageEnglish
Article number1097
Number of pages20
JournalWater
Volume11
Issue number5
DOIs
Publication statusPublished - 25 May 2019

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air transportation
Scour
Normal Distribution
Propellers
scour
dunes
Ships
physical models
ships
experiment
dune
Ship propellers
Normal distribution

Cite this

Cui, Y., Lam, W-H., Zhang, T., Sun, C., & Hamill, G. (2019). Scour Induced by Single and Twin Propeller Jet. Water, 11(5), [1097]. https://doi.org/10.3390/w11051097
Cui, Yonggang ; Lam, Wei-Haur ; Zhang, Tianming ; Sun, Chong ; Hamill, Gerard. / Scour Induced by Single and Twin Propeller Jet. In: Water. 2019 ; Vol. 11, No. 5.
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Cui, Y, Lam, W-H, Zhang, T, Sun, C & Hamill, G 2019, 'Scour Induced by Single and Twin Propeller Jet', Water, vol. 11, no. 5, 1097. https://doi.org/10.3390/w11051097

Scour Induced by Single and Twin Propeller Jet. / Cui, Yonggang; Lam, Wei-Haur; Zhang, Tianming; Sun, Chong; Hamill, Gerard.

In: Water, Vol. 11, No. 5, 1097, 25.05.2019.

Research output: Contribution to journalArticle

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