东北大学学报(自然科学版) ›› 2024, Vol. 45 ›› Issue (5): 721-728.DOI: 10.12068/j.issn.1005-3026.2024.05.015
• 资源与土木工程 • 上一篇
张晋瑞1, 姚锡文1, 许开立1, 孙修2
收稿日期:
2023-01-02
出版日期:
2024-05-15
发布日期:
2024-07-31
作者简介:
张晋瑞(1998-),男,山西临汾人,东北大学硕士研究生基金资助:
Jin-rui ZHANG1, Xi-wen YAO1, Kai-li XU1, Xiu SUN2
Received:
2023-01-02
Online:
2024-05-15
Published:
2024-07-31
摘要:
为提高矿井智能巡检车CO体积分数监测数据的可靠性,通过运用计算流体动力学软件对山东焦家金矿-630 m掘进巷道的风流分布及CO体积分数时空演化规律进行了分析.研究结果表明,风筒出口至掌子面区段风流状态不稳定,易产生扰动气体体积分数分布的涡旋;在自身性质及边界层流影响下,CO体积分数峰值多分布于巷道顶部,CO传感器应搭载于车体较高位置;衰减段期间巷道两侧CO体积分数变化不稳定,智能巡检车行进时应位于巷道中间附近.与某掘进巷道中CO体积分数随通风时间的衰减变化进行对比,验证了模拟结果的准确性.
中图分类号:
张晋瑞, 姚锡文, 许开立, 孙修. 矿井智能巡检车CO传感器搭载位置优化[J]. 东北大学学报(自然科学版), 2024, 45(5): 721-728.
Jin-rui ZHANG, Xi-wen YAO, Kai-li XU, Xiu SUN. Optimization of CO Sensor Carrying Position of Mine Intelligent Inspection Vehicle[J]. Journal of Northeastern University(Natural Science), 2024, 45(5): 721-728.
边界条件 | 参数设定 |
---|---|
紊流模型 | RNG k-ε模型 |
重力加速度/(m·s-2) | 9.81 |
时间模型 | 非稳态 |
壁面函数 | 标准壁面函数 |
压力速度耦合方法 | 压力隐式算子分裂法 |
能量方程 | 开启 |
温度/K | 297 |
组分输运模型 | CO-air |
CO扩散系数/(m2·s-1) | 1.9×10-5 |
入口边界条件 | 速度入口 |
入口速度/(m·s-1) | 17.7 |
紊流动能/(m2·s-2) | 1.57 |
紊流耗散率/(m2·s-3) | 19.6 |
出口边界条件 | 压力出口 |
出口表压/Pa | 0 |
CO初始质量分数 | 0.004 8 |
表1 Fluent数值模拟参数设定
Table 1 Fluent numerical simulation parameters settings
边界条件 | 参数设定 |
---|---|
紊流模型 | RNG k-ε模型 |
重力加速度/(m·s-2) | 9.81 |
时间模型 | 非稳态 |
壁面函数 | 标准壁面函数 |
压力速度耦合方法 | 压力隐式算子分裂法 |
能量方程 | 开启 |
温度/K | 297 |
组分输运模型 | CO-air |
CO扩散系数/(m2·s-1) | 1.9×10-5 |
入口边界条件 | 速度入口 |
入口速度/(m·s-1) | 17.7 |
紊流动能/(m2·s-2) | 1.57 |
紊流耗散率/(m2·s-3) | 19.6 |
出口边界条件 | 压力出口 |
出口表压/Pa | 0 |
CO初始质量分数 | 0.004 8 |
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