Random Walk Model for the Pollutant Transport of Continuous Point Source

• Main Authors: Cheng-En Wu, 吳昌恩
• Other Authors: Shian-Woei Jeng
• Format: Others
• Language: zh-TW
• Published: 1999
• Online Access: http://ndltd.ncl.edu.tw/handle/55579277267333427557

碩士 === 逢甲大學 === 土木及水利工程研究所 === 87 === Abstract The midstream and downstream of major and minor rivers in Taiwan have been polluted seriously. The pollution is much caused by various continuous pollutants. This study uses Random Walk Method to set up a numerical model to simulate the transport of continuous point source in rivers. The goal is to describe the simulation method, analyze error of simulation result, and simulate the seawater intrusion in Wu-Shi tidal reach as a practical sample. This paper sets up a 1-D random walk numerical model for continuous point source successfully, which can be executed in 1-D flow field with constant parameters. This study showed that if DF=0.20 the discrete error can be minimized, and that the random error can be controlled by adjusting the number of boundary released particles and the size of counting grid.