03414nam a2200433 4500 20260817162532.0 190598 th eng .b10070084 AIT Thesis no. WA-85-7 Gunaratna, Priyantha Parakum An analytical model of ripple formation Bangkok : Asian Institute of Technology, 1984 81 p. Thesis ; no. WA-85-7 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. Ripple-marks Suphat Vongvisessomjai, Chairperson Wang, Tsan-Wen, Examination Committee Tawatchai Tingsanchali, Examination Committee Carl Duisberg Gesellschaft e.v. (CDG), Scholarship Donor Asian Institute of Technology. Thesis ; no. WA-85-7 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B20135 .b10070084 mnait s 240409 2 951012 m a s 3 mnait mnait mnarc mnait 20 40 Barcode : 30050003050852 CREATED : 1994-05-16 RECORD # : i10068107 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050003050845 CREATED : 1994-05-16 RECORD # : i10068119 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050160035571 CREATED : 2016-05-02 RECORD # : i12878108 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050121099773 CREATED : 2023-11-10 RECORD # : i13468017 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 5344 5344 0 0 0 0 MAIN MAIN mnait 2026-08-17 10.00 0 AIT Thesis no. WA-85-7 30050003050852 2026-08-17 16:25:32 1 2026-08-17 20 0 0 0 0 MAIN MAIN mnait 2026-08-17 10.00 0 AIT Thesis no. WA-85-7 30050003050845 2026-08-17 16:25:32 2 2026-08-17 20 0 0 0 0 MAIN MAIN mnarc 2026-08-17 0 AIT Thesis no. WA-85-7 30050160035571 2026-08-17 16:25:32 2026-08-17 40 0 0 0 0 MAIN MAIN mnait 2026-08-17 0 AIT Thesis no. WA-85-7 30050121099773 2026-08-17 16:25:32 3 2026-08-17 20