One Dimensional Numerical Simulation for Ventilation System of Vehicle Tunnel

• Main Authors: Terng H. Huang, 黃騰宏
• Other Authors: Chung C. Hsu
• Format: Others
• Language: zh-TW
• Published: 1994
• Online Access: http://ndltd.ncl.edu.tw/handle/48775946694206241757

碩士 === 淡江大學 === 水資源及環境工程所 === 82 === A one dimensional numerical model for simulating ventilation system of vehicle tunnel was developed in this study. The numerical simulation consists two parts. The first part solves the continuity and momentum equations by the Preissmann four- point implicit scheme. The second part solves the concentration dispersion equation. The dispersion equation is solved by using a split operator approach. The splited diffusion eq. is treated using the Crank-Nicolson implict difference scheme incorporating Thomas algorithm method and the splited advection eq. is by the characteristics method incorporating Hermit fourth order interpolation method. Using this model, one can predict the flow and concentration distributions in the ventilation system included tunnels.