000			03213nam a2200385 4500
005			20260818113047.0
008			160398 th eng
035			_a.b10265715
099		9	_aAIT Thesis no. 1079
100	0		_aSman Jareonkitpoonpon
245	1	0	_aExperimental investigations on bed-load transportation under steady, uniform and steady, non-uniform flow conditions
260			_aBangkok : _bAsian Institute of Technology, _c1978
300			_a54 p.
490	1		_aThesis ; _vno. 1079
500			_aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering of the Asian Institute of Technology, Bangkok, Thailand
502			_aThesis (M.Eng.) - Asian Institute of Technology, 1978
520			_aAn 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.
650		0	_aBed load
700	1		_aOverbeek, Henk Jen, _eChairperson
700	1		_aEggers, Helmut, _eExamination Committee
700	0		_aTawatchai Ti:ngsanchali, _eExamination Committee
710	2		_aThe Royal Netherlands Government, _eScholarship Donor
810	2		_aAsian Institute of Technology. _tThesis ; _vno. 1079
856			_3Full-Text _uhttp://203.159.5.9/ait-thesis/detail.php?q=B22866
907			_a.b10265715 _bmnait _cx
902			_a251006
998			_b2 _c951012 _dm _ea _fx _g0
945			_lmnait
945			_lmnarc
942			_c20
942			_c40
909			_aBarcode : 30050003021424 _bCREATED : 1994-05-17 _cRECORD # : i10327010 _dLPATRON : 0 _eLCHKIN : - _f# RENEWALS : 0 _g# OVERDUE : 0 _hIUSE3 : 0 _iTOT CHKOUT : 0 _jTOT RENEW : 0
909			_aBarcode : 30050160088463 _bCREATED : 2016-04-29 _cRECORD # : i12964669 _dLPATRON : 0 _eLCHKIN : - _f# RENEWALS : 0 _g# OVERDUE : 0 _hIUSE3 : 0 _iTOT CHKOUT : 0 _jTOT RENEW : 0
999			_c42105 _d42105