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035 _a.b10518861
099 9 _aAIT Thesis no. 738
100 0 _aWitaya Chongchareon
245 1 0 _aPrediction of salt water concentration at Chao Phya estuaries
260 _aBangkok :
_bAsian Institute of Technology,
_c1975
300 _a52 p.
490 1 _aThesis ;
_vno. 738
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, 1975
520 _aThe M.I,T. Transient Salinity . Intrusion Model was used for the prediction of salinity distribution in the Chao Phya Estuary. The model is formulated in finite-difference terms using the one dimensional, tidal time, variable area equations of continuity, longitudinal momentum and conservation of salt. The tidal dynamics equations were solved by explicit scheme while the salt balance equation was solved by implicit scheme. For a given set of initial and boundary conditions, the instantaneous tidal motion and salinity distribution can be obtained throughout any specified number of tidal periods. The effect of boundary conditions was discussed and the schematization of Chao Phya Estuary from river mouth up to 116 kilometers upstream was presented. The model was calibrated by adjusting the Manning roughness coefficient. The calibrated Manning roughness coefficient was then used to predict the transient salinity distribution from the mathematical model for three periods each of which having 32 tidal cycles. Records of fresh water inflows, salinity and water surface profiles at the entrance were used as the inputs to the model during the transient runs. The predicted and observed salinity distributions were in good agreement. Finally, the maximum salinity distributions along the estuary at various regulated fresh water discharges were also presented for the purpose of salt water intrusion control.
650 0 _aSaline water conversion
_xChao Phya River
650 0 _aEstuaries
_xChao Phya River
700 1 _aArbhabhirama Anat,
_eExamination Committee
700 1 _aNishimura, Hitoshi,
_eExamination Committee
700 1 _aPrida Thimakorn,
_eExamination Committee
710 2 _aKeidanren Foundation and the Asian Institute of Technology,
_eScholarship Donor
810 2 _aAsian Institute of Technology.
_tThesis ;
_vno. 738
856 _3Full-Text
_uhttp://203.159.5.9/ait-thesis/detail.php?q=B23992
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