Analytical Model of Solute Transport in Saturated Soil with Released Sources

• Main Authors: You-Tzuo Chen, 陳侑佐
• Other Authors: Wen-Guey Chung
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/36229895874807702179

碩士 === 國立屏東科技大學 === 土木工程系所 === 97 === With the aid of integral transform (e.g. Laplace Transform, Fourier Transform, Fourier Sine Transform, Fourier Cosine Transform and so on), the fundamental solution for the 1-D, 2-D and 3-D solute transport problems with Dirichlet and Neumann conditions were derived.The analytical solutions for Considering with these emission patterns suchas instantaneous emission with point source, periodical emission with point, line and plane source, continuous emission with point source, and exponential emission with point source) with pollutant source can be obtained through the integral calculus techniques.With the assistance of the initial conditions to seek the multi-dimensional solutions, we also verify the solutions by dint of computer codes. The derived solutions are helpful to soil amelioration and other similar computing simulations of solute transport in saturated soil systems.We calculate and discuss with the analytical solutions of multi-dimensional emission patterns, it shows that the speed of the seepage will affect themove direction of solute. Derived in this study was one-dimensional, two-dimensional and three-dimensional analytical solution for pollution transfer mode analysis and discussed the application of the calculation. Analysis of one-dimensional pollution transport model shows that the distribution of solute concentration in the growth over time and gradually extended to the deep flow speed and by the greatest impact. Analysis of two-dimensional pollution transport model results to transient line source of pollution emissions as an example, consider the pure-proliferation, respectively, with flow conditions, and the calculation results showed that the speed of the flow direction of the impact of the direction of migration of solute concentration. Analysis of three-dimensional pollution transport model results to the moment of non-point source pollution emissions as an example, consider the pure-proliferation, respectively, with flow conditions, and the calculation results showed that the speed of the flow direction of the impact of the direction of migration of solute concentration.