TY  - BOOK
AU  - Wudhipong Kittitanasuan
AU  - Tawatchai Tingsanchali, 
AU  - Gupta,Ashim Das
AU  - Akiyama,Juichiro
ED  - The Government of Japan, 
TI  - Changes in channel bed slope due to non-equilibrium sediment transport
T2  - Thesis
PY  - 1990///
CY  - Bangkok
PB  - Asian Institute of Technology
KW  - Sediment transport
KW  - Channels (Hydraulic engineering)
N1  - 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, 1990
N2  - Analytical solutions were determined to predict changes in bed levels of an alluvial channel when the upstream sediment supply in stopped or when the downstream end bed level drops. These solutions were determined by solving the continuity and momentum equations of flow and sediment transport. Two approaches were considered. The first so called the parabolic modeling considers that the friction slope in the flow momentum equation is equal to the bed slope. The second approach so called the hyperbolic modeling considers the friction slope equal to the water surface slope. The analytical solutions determined in this study are compared with the experimental data in this study and those given by Newton (1951) and also with the previous analytical solutions determined by De Vries (1973) and Gill (1983). The results of the comparison verifies the ranges of  applicability given by Ribberlik (1984) of the parabolic and hyperbolic models. In general it is found that the solutions of hyperbolic model provide an more accurate prediction of changes in bed level with time than the parabolic model in the region near to the source of bed change. In the region far from the source of  bed change, both models predict equally good
UR  - http://203.159.5.9/ait-thesis/detail.php?q=B18596
ER  -