Sediment deposit thickness and its effect on critical velocity for incipient motion
The understanding of how the sediment deposit thickness influences the incipient motion characteristic is still lacking in the literature. Hence, the current study aims to determine the effect of sediment deposition thickness on the critical velocity for incipient motion. An incipient motion experim...
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| Format: | Article |
| Language: | English |
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IWA Publishing
2016
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| Online Access: | http://ir.unimas.my/id/eprint/14869/ http://ir.unimas.my/id/eprint/14869/2/Sediment%20deposit%20-%20Copy.pdf |
| _version_ | 1848837749957722112 |
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| author | Bong, Charles Hin Joo Lau, Tze Liang Aminuddin, Ab Ghani Chan, Ngaiweng |
| author_facet | Bong, Charles Hin Joo Lau, Tze Liang Aminuddin, Ab Ghani Chan, Ngaiweng |
| author_sort | Bong, Charles Hin Joo |
| building | UNIMAS Institutional Repository |
| collection | Online Access |
| description | The understanding of how the sediment deposit thickness influences the incipient motion characteristic is still lacking in the literature. Hence, the current study aims to determine the effect of sediment deposition thickness on the critical velocity for incipient motion. An incipient motion experiment was conducted in a rigid boundary rectangular flume of 0.6 m width with varying sediment deposition thickness. Findings from the experiment revealed that the densimetric Froude number has a logarithmic relationship with both the thickness ratios ts=d and ts=y0 (ts: sediment deposit thickness; d: grain size; y0: normal flow depth). Multiple linear regression analysis was performed using the data from the current study to develop a new critical velocity equation by incorporating thickness ratios into the equation. The new equation can be used to predict critical velocity for incipient motion for both loose and rigid boundary conditions. The new critical velocity equation is an attempt toward unifying the equations for both rigid and loose boundary conditions |
| first_indexed | 2025-11-15T06:44:37Z |
| format | Article |
| id | unimas-14869 |
| institution | Universiti Malaysia Sarawak |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T06:44:37Z |
| publishDate | 2016 |
| publisher | IWA Publishing |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | unimas-148692022-05-24T02:31:42Z http://ir.unimas.my/id/eprint/14869/ Sediment deposit thickness and its effect on critical velocity for incipient motion Bong, Charles Hin Joo Lau, Tze Liang Aminuddin, Ab Ghani Chan, Ngaiweng TA Engineering (General). Civil engineering (General) The understanding of how the sediment deposit thickness influences the incipient motion characteristic is still lacking in the literature. Hence, the current study aims to determine the effect of sediment deposition thickness on the critical velocity for incipient motion. An incipient motion experiment was conducted in a rigid boundary rectangular flume of 0.6 m width with varying sediment deposition thickness. Findings from the experiment revealed that the densimetric Froude number has a logarithmic relationship with both the thickness ratios ts=d and ts=y0 (ts: sediment deposit thickness; d: grain size; y0: normal flow depth). Multiple linear regression analysis was performed using the data from the current study to develop a new critical velocity equation by incorporating thickness ratios into the equation. The new equation can be used to predict critical velocity for incipient motion for both loose and rigid boundary conditions. The new critical velocity equation is an attempt toward unifying the equations for both rigid and loose boundary conditions IWA Publishing 2016-10 Article PeerReviewed text en http://ir.unimas.my/id/eprint/14869/2/Sediment%20deposit%20-%20Copy.pdf Bong, Charles Hin Joo and Lau, Tze Liang and Aminuddin, Ab Ghani and Chan, Ngaiweng (2016) Sediment deposit thickness and its effect on critical velocity for incipient motion. Water Science and Technology, 74 (8). pp. 1876-1884. ISSN 02731223 https://www.scopus.com/inward/record.uri?eid=2-s2.0-84994177836&doi=10.2166%2fwst.2016.376&partnerID=40&md5=750d03ded4d3c0f04c6a02d2855f6f7a DOI: 10.2166/wst.2016.376 |
| spellingShingle | TA Engineering (General). Civil engineering (General) Bong, Charles Hin Joo Lau, Tze Liang Aminuddin, Ab Ghani Chan, Ngaiweng Sediment deposit thickness and its effect on critical velocity for incipient motion |
| title | Sediment deposit thickness and its effect on critical velocity for incipient motion |
| title_full | Sediment deposit thickness and its effect on critical velocity for incipient motion |
| title_fullStr | Sediment deposit thickness and its effect on critical velocity for incipient motion |
| title_full_unstemmed | Sediment deposit thickness and its effect on critical velocity for incipient motion |
| title_short | Sediment deposit thickness and its effect on critical velocity for incipient motion |
| title_sort | sediment deposit thickness and its effect on critical velocity for incipient motion |
| topic | TA Engineering (General). Civil engineering (General) |
| url | http://ir.unimas.my/id/eprint/14869/ http://ir.unimas.my/id/eprint/14869/ http://ir.unimas.my/id/eprint/14869/ http://ir.unimas.my/id/eprint/14869/2/Sediment%20deposit%20-%20Copy.pdf |