AI SearchExperimental investigations on bed-load transportation under steady, uniform and steady, non-uniform flow conditions
Sman Jareonkitpoonpon
Experimental investigations on bed-load transportation under steady, uniform and steady, non-uniform flow conditions - Bangkok : Asian Institute of Technology, 1978 - 54 p. - Thesis ; no. 1079 . - Asian Institute of Technology. Thesis ; no. 1079 .
A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering of the Asian Institute of Technology, Bangkok, Thailand
Thesis (M.Eng.) - Asian Institute of Technology, 1978
An experimental investigation regarding sediment transport process in open channel flow was carried out, using more or less uniform coarse sand (D50 = 1.0 mm and a = 1.15). The study was separated into two parts, namely, experiments in uniform and non-uniform flow. The uniform flow experiments were conducted in a straight sediment flume, 20 m long, with different water and sediment discharges to describe the sediment transport over a dune bed configuration. The bed load transport for each run was computed by means of several formulae. Close agreement was obtained when the England-Hansen formula was used to compute the transport rate. The non-uniform flow experiments were conducted in a channel, 16 m long, with a gradual change in width. The purpose being to study sediment transportation under non-uniform flow conditions. The water and sediment discharges were varied for a channel with a contraction ratio of 0.6 and 0.95 respectively. For each test the bed load transport both in the wide and narrow sections was again computed by means of several transport formulae . Moreover the ratio of the depth in the contracted section to that in the uncontracted section was also obtained. The England-Hansen formula gave the best agreement, however, only when the channel is considered as a single channel regardless of the contraction in channel width. The computed depth ratio obtained from equations relating to the channel width ratio are approximately acceptable.
Bed load
Experimental investigations on bed-load transportation under steady, uniform and steady, non-uniform flow conditions - Bangkok : Asian Institute of Technology, 1978 - 54 p. - Thesis ; no. 1079 . - Asian Institute of Technology. Thesis ; no. 1079 .
A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering of the Asian Institute of Technology, Bangkok, Thailand
Thesis (M.Eng.) - Asian Institute of Technology, 1978
An experimental investigation regarding sediment transport process in open channel flow was carried out, using more or less uniform coarse sand (D50 = 1.0 mm and a = 1.15). The study was separated into two parts, namely, experiments in uniform and non-uniform flow. The uniform flow experiments were conducted in a straight sediment flume, 20 m long, with different water and sediment discharges to describe the sediment transport over a dune bed configuration. The bed load transport for each run was computed by means of several formulae. Close agreement was obtained when the England-Hansen formula was used to compute the transport rate. The non-uniform flow experiments were conducted in a channel, 16 m long, with a gradual change in width. The purpose being to study sediment transportation under non-uniform flow conditions. The water and sediment discharges were varied for a channel with a contraction ratio of 0.6 and 0.95 respectively. For each test the bed load transport both in the wide and narrow sections was again computed by means of several transport formulae . Moreover the ratio of the depth in the contracted section to that in the uncontracted section was also obtained. The England-Hansen formula gave the best agreement, however, only when the channel is considered as a single channel regardless of the contraction in channel width. The computed depth ratio obtained from equations relating to the channel width ratio are approximately acceptable.
Bed load