Transport of bed load sediment in the presence of stable clast / Mohd Sofiyan Sulaiman

Surface bedform in the form of stable clast is deduced to be presence at micro-scale. Stable clast is believed to modify the flow field and provide sink and source for incoming sediment particles. The dynamics of flow pattern and bed load rate in the presence of stable clast are always puzzling due...

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Main Author:	Sulaiman, Mohd Sofiyan
Format:	Thesis
Language:	English
Published:	2016
Subjects:	Engineering instruments, meters, etc. Industrial instrumentation Engineering machinery, tools, and implements
Online Access:	http://ir.uitm.edu.my/id/eprint/27847/ http://ir.uitm.edu.my/id/eprint/27847/1/TP_MOHD%20SOFIYAN%20SULAIMAN%20EC%2016_5.pdf

id	uitm-27847
recordtype	eprints
spelling	uitm-278472020-01-29T03:48:28Z http://ir.uitm.edu.my/id/eprint/27847/ Transport of bed load sediment in the presence of stable clast / Mohd Sofiyan Sulaiman Sulaiman, Mohd Sofiyan Engineering instruments, meters, etc. Industrial instrumentation Engineering machinery, tools, and implements Surface bedform in the form of stable clast is deduced to be presence at micro-scale. Stable clast is believed to modify the flow field and provide sink and source for incoming sediment particles. The dynamics of flow pattern and bed load rate in the presence of stable clast are always puzzling due to wide range of particle size and presence of roughness elements. Thus, this issue can be treated using two methodological approaches namely local scale and reach scale solutions. Incorporating the flow fields and turbulence statistics at a very local scale leads to the prediction of occurrence of bed load transport using probability approach. The binary model of dimensionless velocities for ejection and local bed shear using TKEw’ gave better prediction among other models. Almost 80% of the bed load mechanism (whether occur or not) can be predicted by this proposed model. Understanding transport occurrence at finer scale is vital for in-stream rehabilitation, river restoration and installation of sediment sampler on river beds. However, treating the dynamics of flow and bed load at reach scale is significantly differed from local scale approach. Transport of sediment in the presence of stable clast at reach scale is best equipped using continuous transport prediction or reach-averaged bed load model. Transport of bed load sediment using existing prediction model postulate the less suitability and a need for modification. Thus, a similarity approach is used to develop the bed load model which can predict the bed load transport at reach scale. This new equation is successfully predicting the transport of bed load sediment in the presence of stable clast. Almost 70% of the selected river data portrayed better prediction compared to existing model. This newly proposed model make the full use of particle densimetric Froude number as the main predictor variable. 2016 Thesis NonPeerReviewed text en http://ir.uitm.edu.my/id/eprint/27847/1/TP_MOHD%20SOFIYAN%20SULAIMAN%20EC%2016_5.pdf Sulaiman, Mohd Sofiyan (2016) Transport of bed load sediment in the presence of stable clast / Mohd Sofiyan Sulaiman. PhD thesis, Universiti Teknologi MARA.
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Teknologi MARA
building	UiTM Institutional Repository
collection	Online Access
language	English
topic	Engineering instruments, meters, etc. Industrial instrumentation Engineering machinery, tools, and implements
spellingShingle	Engineering instruments, meters, etc. Industrial instrumentation Engineering machinery, tools, and implements Sulaiman, Mohd Sofiyan Transport of bed load sediment in the presence of stable clast / Mohd Sofiyan Sulaiman
description	Surface bedform in the form of stable clast is deduced to be presence at micro-scale. Stable clast is believed to modify the flow field and provide sink and source for incoming sediment particles. The dynamics of flow pattern and bed load rate in the presence of stable clast are always puzzling due to wide range of particle size and presence of roughness elements. Thus, this issue can be treated using two methodological approaches namely local scale and reach scale solutions. Incorporating the flow fields and turbulence statistics at a very local scale leads to the prediction of occurrence of bed load transport using probability approach. The binary model of dimensionless velocities for ejection and local bed shear using TKEw’ gave better prediction among other models. Almost 80% of the bed load mechanism (whether occur or not) can be predicted by this proposed model. Understanding transport occurrence at finer scale is vital for in-stream rehabilitation, river restoration and installation of sediment sampler on river beds. However, treating the dynamics of flow and bed load at reach scale is significantly differed from local scale approach. Transport of sediment in the presence of stable clast at reach scale is best equipped using continuous transport prediction or reach-averaged bed load model. Transport of bed load sediment using existing prediction model postulate the less suitability and a need for modification. Thus, a similarity approach is used to develop the bed load model which can predict the bed load transport at reach scale. This new equation is successfully predicting the transport of bed load sediment in the presence of stable clast. Almost 70% of the selected river data portrayed better prediction compared to existing model. This newly proposed model make the full use of particle densimetric Froude number as the main predictor variable.
format	Thesis
author	Sulaiman, Mohd Sofiyan
author_facet	Sulaiman, Mohd Sofiyan
author_sort	Sulaiman, Mohd Sofiyan
title	Transport of bed load sediment in the presence of stable clast / Mohd Sofiyan Sulaiman
title_short	Transport of bed load sediment in the presence of stable clast / Mohd Sofiyan Sulaiman
title_full	Transport of bed load sediment in the presence of stable clast / Mohd Sofiyan Sulaiman
title_fullStr	Transport of bed load sediment in the presence of stable clast / Mohd Sofiyan Sulaiman
title_full_unstemmed	Transport of bed load sediment in the presence of stable clast / Mohd Sofiyan Sulaiman
title_sort	transport of bed load sediment in the presence of stable clast / mohd sofiyan sulaiman
publishDate	2016
url	http://ir.uitm.edu.my/id/eprint/27847/ http://ir.uitm.edu.my/id/eprint/27847/1/TP_MOHD%20SOFIYAN%20SULAIMAN%20EC%2016_5.pdf
first_indexed	2023-09-18T23:19:06Z
last_indexed	2023-09-18T23:19:06Z
_version_	1777419311405596672

Transport of bed load sediment in the presence of stable clast / Mohd Sofiyan Sulaiman

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