Propeller Wash Scour near Quay Walls

Hamill, Gerard; Johnston, Harold T.; Stewart, D.P.

doi:10.1061/(asce)0733-950x(1999)125:4(170)

Cited by 62 publications

(73 citation statements)

References 3 publications

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“…These data are important as some of the proposed equations detailed in Table 3 use time as a predictor variable. However, both Hamill et al (1999), Hamill (1987) and Hong, Chiew, Susanto, and Cheng (2012) define an experimental time for the asymptotic state. Therefore, the asymptotic state reached in the real data are compared to results yielded by Eqs (5-8), using their reference time scale with a 1/25 geometric scale.…”

Section: Resultsmentioning

confidence: 99%

“…(7); • equations for confined propeller jets: Hamill et al (1999) with Eq. (9), but using the first expression described by Hamill (1987) to compute the scouring action of an unconfined propeller jet, Eq.…”

Section: Discussionmentioning

confidence: 99%

“…Apart from the influence of the previous variables, other authors have suggested the need to include rudder influence (Verheij, 1983), the use of more than one propeller (Berg & Magnusson, 1987), and the influence of the propeller characteristics (i.e. Hamill, 1988;Hamill et al, 1999;Hashmi, 2007;Lam, Hamill, Robinson, & Raghunathan, 2012).…”

Section: Erosion Depth Formulaementioning

confidence: 99%

“…Confined propeller jets Hamill et al (1999) experimental values of efflux velocity were used to compute the maximum scouring depth, both Eqs (1) and (2) will be used to compare results. The percentage of installed engine power will be set to f p = 0.15.…”

Section: Journal Of Hydraulic Research (2016)mentioning

confidence: 99%

“…This problem affects several harbours around the world with different configurations, morphologies and tidal ranges (e.g. Berg & Magnusson, 1987;Chait, 1987;Fuehrer, Pohl, & Römish, 1987;Hamill, Johnston, & Stewart, 1999;Hamill, Ryan, & Johnston, 2009;Schokking, Janssen, & Verhagen, 2003).…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Erosion caused by propeller jets in a low energy harbour basin

Mujal-Colilles

Gironella²,

Sánchez‐Arcilla³

et al. 2016

Journal of Hydraulic Research

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Field data of a harbour basin are compared with analytical formulations for predicting maximum scouring depth due to propeller jets. Spatial data analysis of seven-year biannual bathymetries quantifies the evolution of the scouring hole along with the sedimentation process within a harbour basin. The maximum scouring depth is found to be of the order of the propeller diameter with a maximum scouring rate within the first six months of docking manoeuvring. Three of the analysed expressions yielded realistic results while observed discrepancies between the theoretical predictions and field data are related to scaling factors. The outcomes of this analysis can be extrapolated to other harbours to improve their management. The obtained results highlight the importance of field data in developing combined physical and numerical models.

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Erosion Depth Formulaementioning

confidence: 99%

Section: Journal Of Hydraulic Research (2016)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Erosion caused by propeller jets in a low energy harbour basin

Mujal-Colilles

Gironella²,

Sánchez‐Arcilla³

et al. 2016

Journal of Hydraulic Research

View full text Add to dashboard Cite

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PIV measurements of flow in and around scour holes

Hill

Younkin

2006

Exp Fluids

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Experimental study of propeller and ducted propeller’s wake inducted scour

Zhang,

Liang,

Qin

et al. 2023

Intell. Mar. Technol. Syst.

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This study investigates the scour profile, scour hole depth, deposition mound height, and the positions produced by the propeller and the ducted propeller that vary over time. The terrains produced by the Ka4-70 propeller and the Ka4-70 propeller + No. 19A duct are obtained using a linear laser three-dimensional terrain scanning system. Compared with the Acoustic Doppler velocimetry (ADV) and other approaches, the system presented here could efficiently and precisely capture the terrain. The principle and system layout are elaborated in this work. Notably, the system can perform underwater scanning. Moreover, compared with the ADV, our system is more efficient and has a smaller data interval. The scour profile, max scour depth and height, and their positions over time are analyzed. The development of the ducted propeller scour is faster than that of the propeller. The ducted propeller scour has a longer, narrower, and shallower influence range compared to the propeller scour. The scour hole range is bigger than that of the scour deposition mound. The general trends of the propeller and ducted propeller development are similar. In each development, the terrain is also morphologically similar at different phases. In addition, the relationship between the max deposition mound position and the max scour hole depth is analyzed, and a scour classic formula is used to fit the scour data on a time scale.

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Propeller Wash Scour near Quay Walls

Cited by 62 publications

References 3 publications

Erosion caused by propeller jets in a low energy harbour basin

Erosion caused by propeller jets in a low energy harbour basin

PIV measurements of flow in and around scour holes

Experimental study of propeller and ducted propeller’s wake inducted scour

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