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Unsteady response of interface in coastal aquifers | |
| Author | Chiou, Kin-Forie |
| Call Number | AIT Thesis no. 855 |
| Subject(s) | Aquifers--Mathematical models |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering of the Asian Institute of Technology, Bangkok, Thailand |
| Publisher | Asian Institute of Technology |
| Abstract | Dynamic effects of the ground-salt water interface corresponding to ground water fluctuations were investigated. The flow equations were developed by accepting the 8.lidity of Dupuit's assumptions and considering "a", the ratio of ground water depth below the mean sea level to the ground water depth above the mean sea level, to be a constant or a function of time and space. The theoretical solutions were obtained by using a numerical scheme. Experiments were conducted to calibrate the parameter "a" and investigate the applicability of the mathematical model. The equipment makes use of Hele-Shaw model,. which consisted of· two i3 ft. by 4 ft. by 1/2 in. plexi-glass plates placed vertically with a spa fog of 1/6 in.. The fluids used in the model were fresh water and lubricating oil having the kinematic viscosity 9.2 x 10-6 m2 /sec at temperature 70 F. It is observed that the dynamic effects of suddenly rising step function and linearly rising step function are insignificant. For the case of modified hydrograph, the dynamic effects are significant and the value of a was found to be equal to 50. For the case of sinusoidal curve, the dynamic effects are also significant and dependent on time. |
| Year | 1976 |
| Type | Thesis |
| School | Student Research Before 1980 |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Thesis (Year <=1979) |
| Chairperson(s) | Arbhabhirama Anat |
| Examination Committee(s) | Nishimura, Hitoshi ; Watanabe, Akira |
| Scholarship Donor(s) | Asian Institute of Technology |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1976 |