Dispersion coefficients in an estuarine network
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Dispersion coefficients in an estuarine network
DISPERSION COEFFICIENTS IN AN ESTUARINE NETWORKbyNguyen The DuyA thesis submitted in partial fulfillment of the requirements for the degree of Master Dispersion coefficients in an estuarine network of EngineeringExamination Committee :Prof. Suphat Vongvisessomjai (Chairman)Prof. Tawatchai TingsanchaliDr. Hitoshi Tanaka7- 29UÍNguyen The DuyNationality :Previous Degree :Scholarship Donor :Vietnamese•>M AOỈỈB.Eng., Polytechnic University of Hochiminh City, Vietnam The Government of SwitzerlandAs Dispersion coefficients in an estuarine network ian Institute of TechnologyBangkok, ThailandAugust, 1992WADispersion coefficients in an estuarine network
determine the dispersion coefficient, a very important parameter, for the prediction of salinity intrusion in estuarine networks.The First Model (TriaDISPERSION COEFFICIENTS IN AN ESTUARINE NETWORKbyNguyen The DuyA thesis submitted in partial fulfillment of the requirements for the degree of Master Dispersion coefficients in an estuarine network m parameters. In this model, the problems of formulating an expression for the dispersion coefficient and determining salinity concentration at the river sections are solved simultaneously for die whole river system. The results obtained from this model show that the dispersion coefficient distribut Dispersion coefficients in an estuarine network ion D(x,t) along the main branches of the Mekong river system depends upon the salinity and its gradient and can be represented well by the expressionDispersion coefficients in an estuarine network
D - k3 s -|f3 dxDue to the larger variation in time of the salinity gradient magnitudes when comparing with the salinity concentration magnitudes, theDISPERSION COEFFICIENTS IN AN ESTUARINE NETWORKbyNguyen The DuyA thesis submitted in partial fulfillment of the requirements for the degree of Master Dispersion coefficients in an estuarine network r of the dispersion coefficient, while the salinity concentration has a secondary effect on the variation of this coefficient. From the computational results, it can be also seen that there is no large variation in the magnitudes of the relation coefficient k3 although its value depends on a lot of Dispersion coefficients in an estuarine network factors.The Second Model (Backward Method) is established to determine discrete values of the dispersion coefficient in terms of nodal dispersion coefDispersion coefficients in an estuarine network
ficient, using observed data of salinity concentration at internal stations on the river system. The results obtained from this model show that the maDISPERSION COEFFICIENTS IN AN ESTUARINE NETWORKbyNguyen The DuyA thesis submitted in partial fulfillment of the requirements for the degree of Master Dispersion coefficients in an estuarine network m2/s, while the magnitudes fluctuate mainly in the range of 0-1,500 m2/sec. In general, the magnitudes of the dispersion coefficient vary in the same manner as those of the salinity concentration, i.e. the dispersion coefficient at the stations in the area in dry season increases from January to Ap Dispersion coefficients in an estuarine network ril and decreases after April.ACKNOWLEDGEMENTSThe author wishes to express his sincerest gratitude to his advisor, Prof. Suphat Vongvisessomjai, for hDispersion coefficients in an estuarine network
is valuable advises, suggestions, comments and training which were very much helpful in accomplishing this study and in further study. He is also gratDISPERSION COEFFICIENTS IN AN ESTUARINE NETWORKbyNguyen The DuyA thesis submitted in partial fulfillment of the requirements for the degree of Master Dispersion coefficients in an estuarine network ike to extend a deep sense of gratitude to all of his teachers who directly or indirectly have taught and guided him throughout the period of study in AIT. A word of thanks is also extended to all of his friends who helped him in many aspects during the period of study in AIT.Grateful appreciation i Dispersion coefficients in an estuarine network s also conveyed to the scholarship donor, the Government of Switzerland, for providing the financial support and to the Asian Institute of TechnologyDispersion coefficients in an estuarine network
for providing facilities throughout the course of his study.Finally, the author would like to dedicate this work to his family for their spiritual supDISPERSION COEFFICIENTS IN AN ESTUARINE NETWORKbyNguyen The DuyA thesis submitted in partial fulfillment of the requirements for the degree of Master DISPERSION COEFFICIENTS IN AN ESTUARINE NETWORKbyNguyen The DuyA thesis submitted in partial fulfillment of the requirements for the degree of MasterGọi ngay
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