Experimental Investigation of Scour Induced by Twin-Propeller Wash
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 ar...
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| Format: | Article |
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American Society of Civil Engineers
2017
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| author | Yew, W.T. Hashim, Roslan Ng, K.C. |
| author_facet | Yew, W.T. Hashim, Roslan Ng, K.C. |
| author_sort | Yew, W.T. |
| collection | UM |
| description | 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. |
| first_indexed | 2024-03-06T05:46:45Z |
| format | Article |
| id | um.eprints-18927 |
| institution | Universiti Malaya |
| last_indexed | 2024-03-06T05:46:45Z |
| publishDate | 2017 |
| publisher | American Society of Civil Engineers |
| record_format | dspace |
| spelling | um.eprints-189272019-05-31T05:19:28Z http://eprints.um.edu.my/18927/ Experimental Investigation of Scour Induced by Twin-Propeller Wash Yew, W.T. Hashim, Roslan Ng, K.C. TA Engineering (General). Civil engineering (General) TJ Mechanical engineering and machinery 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. American Society of Civil Engineers 2017 Article PeerReviewed Yew, W.T. and Hashim, Roslan and Ng, K.C. (2017) Experimental Investigation of Scour Induced by Twin-Propeller Wash. Journal of Waterway, Port, Coastal, and Ocean Engineering, 143 (4). 04017006. ISSN 0733-950X, DOI https://doi.org/10.1061/(ASCE)WW.1943-5460.0000387 <https://doi.org/10.1061/(ASCE)WW.1943-5460.0000387>. http://dx.doi.org/10.1061/(ASCE)WW.1943-5460.0000387 doi:10.1061/(ASCE)WW.1943-5460.0000387 |
| spellingShingle | TA Engineering (General). Civil engineering (General) TJ Mechanical engineering and machinery Yew, W.T. Hashim, Roslan Ng, K.C. Experimental Investigation of Scour Induced by Twin-Propeller Wash |
| title | Experimental Investigation of Scour Induced by Twin-Propeller Wash |
| title_full | Experimental Investigation of Scour Induced by Twin-Propeller Wash |
| title_fullStr | Experimental Investigation of Scour Induced by Twin-Propeller Wash |
| title_full_unstemmed | Experimental Investigation of Scour Induced by Twin-Propeller Wash |
| title_short | Experimental Investigation of Scour Induced by Twin-Propeller Wash |
| title_sort | experimental investigation of scour induced by twin propeller wash |
| topic | TA Engineering (General). Civil engineering (General) TJ Mechanical engineering and machinery |
| work_keys_str_mv | AT yewwt experimentalinvestigationofscourinducedbytwinpropellerwash AT hashimroslan experimentalinvestigationofscourinducedbytwinpropellerwash AT ngkc experimentalinvestigationofscourinducedbytwinpropellerwash |