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008			231297 th eng
035			_a.b10774750
099		9	_aAIT Thesis no. 536
100	1		_aLe, Huu Ti
245	1	0	_aWave effects on buoyant plumes
260			_aBangkok : _bAsian Institute of Technology, _c1973
300			_a49, 29 p.
490	1		_aThesis ; _vno. 536
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, 1973
520			_aThe effect of waves on buoyant plumes was studied in this paper, based on previous investigations into buoyant plumes in still ambient fluids or in cross streams. The waves generated in the experiments were restricted to long waves of small amplitudes only, in order to eliminate the effects of finite amplitudes and vertical velocities which may strongly affect the change of the plumes. On the other hand, the uniform distribution of the horizontal velocity makes the analysis easier, because the analogy to the plume in a uniform cross stream can be easily applied. From the observations, we can divide the trajectories of the plumes into three cases: - nearly vertical plume for high k - intermediate case - nearly horizontal plume for low k where k = Wo _U Wo : the average velocity of the waves taken over a half wave period. This distinction also depends on the ratio h/Do where h : the water depth in the flume Do : the diameter of the orifice Using the integral technique of the analysis, and assuming similarity, we can predict the plume changes with time. From this numerical method, we can only obtain the dilution rate for the first and third cases. In this study, two numerical solutions were obtained for the first case with k = 20.5 and h/D = 33.3 and for the third case with k = 3.54 and 0 h/D = 25. 0 We know that it is not feasible to measure the vertical velocity distributions as well as the concentration distributions along the plume. So the measurements of concentration was only carried out at the surface of the water just above the orifice. The experimental data were obtained for the dilution rate at the water surface just above the orifice only from 7 sets of h/Do , in which we have 3 values of D , 0.5, 0.75, and l.p cm, at almost 2 different densities of the ambient water whose Froude number ranged from 1 to 7, and the ratio k varying from 3 to 30. The experimental data are analyzed to give a semi-empirical formula combined theoretical consideration, and it is found that the formula can be applied with sufficient accuracy to the experimental range covered by the present analysis,
650	1	0	_aWave mechanics
650	1	0	_aOcean waves
700	1		_aShuto, Nobuo, _eChairperson
700	1		_aArbhabhirama Anat, _eExamination Committee
700	1		_aAckermann, Norbert L., _eExamination Committee
710	2		_aCanadian Province of British Columbia, _eScholarship Donor
810	2		_aAsian Institute of Technology. _tThesis ; _vno. 536
856			_3Full-Text _uhttp://203.159.5.9/ait-thesis/detail.php?q=B24259
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902			_a260601
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909			_aBarcode : 30050003030987 _bCREATED : 1994-05-19 _cRECORD # : i10995511 _dLPATRON : 0 _eLCHKIN : - _f# RENEWALS : 0 _g# OVERDUE : 0 _hIUSE3 : 0 _iTOT CHKOUT : 0 _jTOT RENEW : 0
909			_aBarcode : 30050160094214 _bCREATED : 2016-04-21 _cRECORD # : i12945407 _dLPATRON : 0 _eLCHKIN : - _f# RENEWALS : 0 _g# OVERDUE : 0 _hIUSE3 : 0 _iTOT CHKOUT : 0 _jTOT RENEW : 0
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