02372nam a2200265   450000500170000000800410001703500150005810000280007324500760010126000520017730000110022949000260024050001440026650200580041052012480046865000320171665000150174865000370176370000420180070000450184270000470188771000490193481000580198385600650204120260817162531.0150698         th                  eng    a.b100836490 aChatchai Jothityangkoon10aAnalytical model of deformation of a submerged dike along a channel bed  aBangkok :bAsian Institute of Technology,c1991  a107 p.1 aThesis ;vno. WA-91-4  aA thesis submitted in partial fulfillment of the requirement for the degree of Master of  Engineering, School of Engineering and Technology  aThesis (M.Eng.) - Asian Institute of Technology, 1991  aAn analytical model is developed to predict deformation of a submerged dike due to  flow over a fixed bed channel. The governing equations of the model consist of the  continuity and momentum equations of flow, and of sediment transport. The governing  equations are combined and rewritten in form of a wave equation. The wave equation is  solved by using Laplace Transformation considering the effect of angle of repose at  downstream front of the submerged dike and subsidence of bed wave. The input data for  the analytical model are the bed height-time curve at the upstream end and the flow  condition at the station under prediction. The solutions are determined by summation  solutions of deformed bed height-time curves of rectangles representing the histogram of the  input bed height-time curves. The analytical solutions are compared with the data obtained  from the experiments in this study. Both bed load and total load are considered. It is found  that the solution of this analytical model provide an accurate prediction in the region near  to the initial location of submerged dike for Fr=0.25. When 0.25<Fr~0.40, the model  provides a good prediction throughout a larger distance from the initial location of  submerged dike. 0aWater resources development 0aHydraulics 0aChannels (Hydraulic engineering)0 aTawatchai Tingsanchali, eChairperson1 aGupta, Ashim Das,eExamination Committee1 aShibayama, Tomoya, eExamination Committee2 aThe Government of Japan, eScholarship Donor2 aAsian Institute of Technology.tThesis ;vno. WA-91-4  3Full-Textuhttp://203.159.5.9/ait-thesis/detail.php?q=B17740