Numerical simulation of ventilation characteristics in deep-buried long diversion tunnel

被引：0

作者：

Zhu Z. ^{[1
]}

Li X. ^{[1
]}

Chen S. ^{[1
]}

机构：

[1] College of Hydraulic & Environmental Engineering, China Three Gorges University, Yichang

来源：

Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University | 2019年 / 40卷 / 07期

关键词：

Deep-buried; Finite element; Long tunnel; Numerical simulation; Temperature distribution; Tunnel; Turbulence model; Ventilation characteristics; Water-diversion project;

D O I：

10.11990/jheu.201804115

中图分类号：

学科分类号：

摘要：

The traditional method cannot accurately simulate the direction of wind flow and temperature distribution in a tunnel; thus, a numerical method for simulating ventilation characteristics in the construction of a deep-buried long water-diversion tunnel is proposed in this paper. According to the condition of its construction, a three-dimensional model was established. The tunnel mesh structure based on the model was divided by the software GAMBIT, and the ventilation characteristics and modes under the mesh structures were analyzed. The ventilation characteristics of the deep-buried long water-diversion tunnel were analyzed using the three-dimensional turbulent RNG k-ε turbulence model. Additionally, these characteristics under different working conditions were analyzed. Thus, the numerical equation of the final ventilation characteristics was obtained, and the numerical simulation was realized. The experimental results show that the method can accurately simulate the direction and temperature distribution of wind flow in tunnels, and its partition accuracy increases considerably with the number of grids, with an average partition accuracy of 85%. Additionally, it can provide a basis for managing the construction projects of deep-buried long water-diversion tunnels. © 2019, Editorial Department of Journal of HEU. All right reserved.

引用

页码：1304 / 1310

页数：6

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