TY  - SER
AU  - Mahunnop Bunpapong
AU  - Suphat Vo.ngvisessomjai, 
AU  -  Tawatchai Tingsanchali, 
AU  - Overbeek,Henk Jen
ED  - The Government of Canada, 
TI  - Dispersion in various flow phenomena
T2  - Thesis
PY  - 1978///
CY  - Bangkok
PB  - Asian Institute of Technology
KW  - Hydraulics
KW  - Mathematics
N1  - 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
N2  - 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.
UR  - http://203.159.5.9/ait-thesis/detail.php?q=B22856
ER  -