Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7060600 | International Journal of Thermal Sciences | 2018 | 11 Pages |
Abstract
Smoke temperature distribution and smoke stratification law in the interval tunnel were studied through a series of experiments conducted in a 1/15 scale model tunnel. The small-scale experiment proved that the dimensionless temperature ratio method proposed by Newman was feasible. Based on the FDS simulation, smoke stratification under different longitudinal ventilation was studied, and the concept of smoke stable-stratification-length was presented. The influence of the heat release rate and the tunnel section on the smoke stable-stratification-length was analyzed. Thereafter, prediction models for the smoke stable-stratification-length and the critical stratification velocity were proposed. It can provide a reference for the design of longitudinal ventilation and smoke exhaust system of tunnels.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Fluid Flow and Transfer Processes
Authors
Zhen Zeng, Kang Xiong, Xin-Ling Lu, Miao-Cheng Weng, Fang Liu,