03605nas|a2200385 i 4500 20260818094000.0 160398s1978 th uzm rtt 00| a1eng d .b10209530 AIT Thesis no. 1069 Mahunnop Bunpapong Dispersion in various flow phenomena Bangkok : Asian Institute of Technology, 1978 117 p. Thesis ; no. 1069 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 The longitudinal dispersion coefficient in inland waterway was calculated using experimental data from various.natural streams. It was found that the predictive equation proposed by LIN (1977) gave results with high degree of consistency and more convenience to apply. Moreover, when applying these data to the equation in the form proposed by HARLEMAN (1964), the results indicated that the equation in this form should be D x 119 R0 · 98. For longitudinal dispersion, in the zone of salinity intrusion in estuary, the relationship between various forms of dimensionless dispersion coefficient and Densiometric Estuary number were investigated. It turned out to be that no functional relationship can be drawn from these attempts. Therefore, the relationship between dimensionless dispersion parameter and Densiometric Estuary number, proposed by THATCHER and HARLEMAN (.1972). , were than tested using data from 5 estuaries. Instead of using the maximum tidal velocity and length of salinity intrusion were used to normalize the dispersion parameter. The equation describing this relation ship was found to be K/UfLi = 0.084 ED 0·32 Thereafter, the horizontal diffusion coefficients at Ao Phai, in the Gulf of Thailand, were calculated from the equation proposed by TAYLOR (1921) which had been transformed from Lagrangian to Eulerian system. The Lagrangian-Eulerian transformation factor, 8, was determined from experimental results of McQUIVEY, KEEFER, and SHIRAZ! (1971). It was found that the horizontal diffusion coefficients were in the order of 10 4 cm2 /sec (3-8 m2 /sec). The dimensionless diffusion coefficients in the ocean were found to be at the same order of magnitude as that proposed by Harleman (1964. The Reynolds number, was calculated by using the mean water depth as the characteristic length and the velocity was the average over half a tidal period of the maximum velocity of the whole period. Hydraulics Mathematics Suphat Vo.ngvisessomjai, Chairperson Tawatchai Tingsanchali, Examination Committee Overbeek, Henk Jen, Examination Committee The Government of Canada, Scholarship Donor Asian Institute of Technology. Thesis ; no. 1069 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B22856 .b10209530 mnait x 251003 2 951012 m a x 0 mnait mnarc 20 40 Barcode : 30050003021192 CREATED : 1994-05-16 RECORD # : i10253324 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050160088638 CREATED : 2016-04-29 RECORD # : i12964499 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 30911 30911 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT Thesis no. 1069 30050003021192 2026-08-18 09:40:00 2 2026-08-18 20 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no. 1069 30050160088638 2026-08-18 09:40:00 2026-08-18 40