An Application of Finite Analytic Method in Unsaturated zone

• Main Authors: Tao, Fang Ce, 陶方策
• Other Authors: Li, Tian Hao
• Format: Others
• Language: zh-TW
• Published: 1995
• Online Access: http://ndltd.ncl.edu.tw/handle/14591241668153241883

碩士 === 國立臺灣大學 === 土木工程學研究所 === 83 === The purpose of this study is to develop a finite analytic numerical model to simulate unsaturated flow and investigate the characteristics of the Finite Analytic numerical model. In order to understand the characteristic of the numerical model, we studied limits in space discretizations.Simulation results show that different types of numerical conductivity averaging scheme have great influence on wetting front moving velocity. Gemetric was proved to be most appropriate among the nine kin weighting coefficients must be positive. A preliminary study about two phase (water-air) flow is also carried out. The simulation result shows that air flow have a strong influence on water flow when the soil surface maintain 100 a ponding situation.