High-resolution simulation of downslope gravity currents in the acceleration phase

• Main Authors: Yu-Lin Huang, 黃友麟
• Other Authors: Chung-Chieh Hsu
• Format: Others
• Language: zh-TW
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/89504250831611591462

碩士 === 淡江大學 === 水資源及環境工程學系碩士班 === 103 === This paper is a two-dimensional numerical simulation of gravity current in the acceleration phase at different angles, and the problem have been solved by numerical methods of the incompressible Navier-Stokes equation with the Boussinesq approximation. Without the limited of experimental condition, can freely selected the plate angle 0°≤θ≤90°, and control other factor (Reynolds number, depth ratio) which can compare the difference. In a previous study (Beghin et al 1981), they can not accurately indentify the maximum U_(f,max) occurs angle. Though numerical computation, we can accurately find when θ=40° , the maximum U_(f,max) will occur in this.