AI SearchAn analytical model of ripple formation
Call Number: AIT Thesis no. WA-85-7 Material type:
TextSeries: Asian Institute of Technology. Thesis ; no. WA-85-7Publication details: Bangkok : Asian Institute of Technology, 1984Description: 81 pSubject(s): Online resources: Dissertation note: Thesis (M.Eng.) - Asian Institute of Technology, 1984 Summary: An analytical study of ripple formation and its effects on sediment transport are carried out. An initial dimensional analysis identifies the predominant factors affecting the behaviour of ripple formation as the relative smoothness of bed sediment and the densiometric sediment Froude number; An exponentially decaying transient function related to these parameters can be used to describe the ripple geometry. The expressions developed for ripple are applied to determine the resulting sediment transport based on the continuity equation of sediment transport. The effects of transient ripple growth and different variations of ripple celerity on sediment transport is investigated. A study on turbulent boundary layer formed due to the presence of ripple and the resulting sediment suspension is made. The rate of suspended sediment transport is determined from a velocity profile and a mean concentration profile. Finally based on the results of suspended sediment transport, an attempt is made to discuss the movement of suspended sediment. It is found from the study that the ripple celerity has a strong influence on the magnitude and direction of sediment transport in the transient state. The analysis of suspended sediment transport revealed that in general sediment particle velocity is a fraction of the water particle velocity.
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Asian Institute of Technology Library AIT Publications | AIT Thesis no. WA-85-7 (Browse shelf(Opens below)) | 1 | Available | 30050003050852 | |||||||||||||
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Asian Institute of Technology Library AIT Publications | AIT Thesis no. WA-85-7 (Browse shelf(Opens below)) | 2 | Available | 30050003050845 | |||||||||||||
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Asian Institute of Technology Library Archives | AIT Thesis no. WA-85-7 (Browse shelf(Opens below)) | Available | 30050160035571 | ||||||||||||||
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Asian Institute of Technology Library AIT Publications | AIT Thesis no. WA-85-7 (Browse shelf(Opens below)) | 3 | Available | 30050121099773 |
A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology
Thesis (M.Eng.) - Asian Institute of Technology, 1984
An analytical study of ripple formation and its effects on sediment transport are carried out. An initial dimensional analysis identifies the predominant factors affecting the behaviour of ripple formation as the relative smoothness of bed sediment and the densiometric sediment Froude number; An exponentially decaying transient function related to these parameters can be used to describe the ripple geometry. The expressions developed for ripple are applied to determine the resulting sediment transport based on the continuity equation of sediment transport. The effects of transient ripple growth and different variations of ripple celerity on sediment transport is investigated. A study on turbulent boundary layer formed due to the presence of ripple and the resulting sediment suspension is made. The rate of suspended sediment transport is determined from a velocity profile and a mean concentration profile. Finally based on the results of suspended sediment transport, an attempt is made to discuss the movement of suspended sediment. It is found from the study that the ripple celerity has a strong influence on the magnitude and direction of sediment transport in the transient state. The analysis of suspended sediment transport revealed that in general sediment particle velocity is a fraction of the water particle velocity.
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