Experimental Investigation of Scour Induced by Twin-Propeller Wash.
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| Title: | Experimental Investigation of Scour Induced by Twin-Propeller Wash. |
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| Authors: | Wan-Tian Yew1 yew_wantian@hotmail.com, Hashim, R.1 roslanum60@gmail.com, Khai-Ching Ng2 |
| Source: | Journal of Waterway, Port, Coastal & Ocean Engineering. Jul2017, Vol. 143 Issue 4, p1-10. 10p. |
| Subjects: | Scour (Hydraulic engineering), Propellers, Sediment transport |
| Abstract: | Advancement of technology has improved the efficiency of marine trading activities through use of vessels equipped with twin propellers instead of a single propeller. The progression from a single propeller to twin propellers will certainly increase occurrences of scour unless protection measures are studied and designed accordingly. An experiment to model a ship's twin-propeller wash was conducted on a flat noncohesive soil bed for observation of scour. The asymptotic scour profile was defined in the following four stages: (1) initial, (2) developing, (3) merging, and (4) asymptotic. An equation is proposed to relate the densimetric Froude number, clearance ratio, and reference time scale to the predicted maximum scour depth and area. The predicted equations were found to be highly correlated with the observed parameters. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Waterway, Port, Coastal & Ocean Engineering is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 122613488 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Experimental Investigation of Scour Induced by Twin-Propeller Wash. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Wan-Tian+Yew%22">Wan-Tian Yew</searchLink><relatesTo>1</relatesTo><i> yew_wantian@hotmail.com</i><br /><searchLink fieldCode="AR" term="%22Hashim%2C+R%2E%22">Hashim, R.</searchLink><relatesTo>1</relatesTo><i> roslanum60@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Khai-Ching+Ng%22">Khai-Ching Ng</searchLink><relatesTo>2</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Waterway%2C+Port%2C+Coastal+%26+Ocean+Engineering%22">Journal of Waterway, Port, Coastal & Ocean Engineering</searchLink>. Jul2017, Vol. 143 Issue 4, p1-10. 10p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Scour+%28Hydraulic+engineering%29%22">Scour (Hydraulic engineering)</searchLink><br /><searchLink fieldCode="DE" term="%22Propellers%22">Propellers</searchLink><br /><searchLink fieldCode="DE" term="%22Sediment+transport%22">Sediment transport</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Advancement of technology has improved the efficiency of marine trading activities through use of vessels equipped with twin propellers instead of a single propeller. The progression from a single propeller to twin propellers will certainly increase occurrences of scour unless protection measures are studied and designed accordingly. An experiment to model a ship's twin-propeller wash was conducted on a flat noncohesive soil bed for observation of scour. The asymptotic scour profile was defined in the following four stages: (1) initial, (2) developing, (3) merging, and (4) asymptotic. An equation is proposed to relate the densimetric Froude number, clearance ratio, and reference time scale to the predicted maximum scour depth and area. The predicted equations were found to be highly correlated with the observed parameters. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Waterway, Port, Coastal & Ocean Engineering is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1061/(ASCE)WW.1943-5460.0000387 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 10 StartPage: 1 Subjects: – SubjectFull: Scour (Hydraulic engineering) Type: general – SubjectFull: Propellers Type: general – SubjectFull: Sediment transport Type: general Titles: – TitleFull: Experimental Investigation of Scour Induced by Twin-Propeller Wash. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Wan-Tian Yew – PersonEntity: Name: NameFull: Hashim, R. – PersonEntity: Name: NameFull: Khai-Ching Ng IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 07 Text: Jul2017 Type: published Y: 2017 Identifiers: – Type: issn-print Value: 0733950X Numbering: – Type: volume Value: 143 – Type: issue Value: 4 Titles: – TitleFull: Journal of Waterway, Port, Coastal & Ocean Engineering Type: main |
| ResultId | 1 |
