Numerical simulation of mixed convective heat transfer characteristics in long span coal sheds

被引：0
|
作者：
Wang W.-Y. [1 ]
Chen L.-L. [2 ]
Cui H.-M. [1 ,3 ,4 ]
Liu Q.-K. [2 ,3 ,4 ,5 ]
机构：
[1] Department of Mathematics and Physics, Shijiazhuang Tiedao University, Shijiazhuang
[2] School of Civil Engineering, Shijiazhuang Tiedao University, Shijiazhuang
[3] Innovation Center for Wind Engineering and Wind Energy Technology of Hebei Province, Shijiazhuang
[4] State Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structures, Shijiazhuang Tiedao University, Shijiazhuang
[5] Wind Engineering Research Center, School of Civil Engineering, Shijiazhuang Tiedao University, Shijiazhuang
来源：
Gongcheng Lixue/Engineering Mechanics | 2021年 / 38卷
关键词：
CFD; Large-span coal shed; Mixed convection; Numerical simulation; Wind speed;
D O I：
10.6052/j.issn.1000-4750.2020.05.S013
中图分类号：
学科分类号：
摘要：
The machine operation in the coal shed and the oxidizing heat release of coal will lead to the decline of indoor air quality and threaten the health of workers. Therefore, it is very important to improve the wind speed at the entrance of the coal shed to accelerate the convective heat dissipation in the shed. The characteristics of convective heat transfer in the large span coal shed space with double rows of coal piles (double heat sources) were studied by using two-dimensional numerical simulation method. By changing four conditions of inlet wind speed setting, the transient evolution process of flow heat transfer in the coal shed was studied, and the flow diagram and temperature cloud diagram of the coal shed in the initial stage, evolution stage and full development stage were given. The spatial distribution of temperature on the Central Line of the coal shed and the transient evolution of temperature at various monitoring points were quantitatively described. The mixed symmetrical heat transfer in the coal shed was summarized to provide reference for the optimization of ventilation scheme in the coal shed and the improvement of working environment. Copyright ©2021 Engineering Mechanics. All rights reserved.
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页码：66 / 71
页数：5
相关论文
共 12 条
  • [1] Xu Feng, Cui Huimin, Natural convection in the side heating chamber, Advances in Mechanics, 44, pp. 98-136, (2014)
  • [2] Lamb S K, Kwod C S, Walton D., A longitudinal field study of the effects of wind-induced building motion on occupant wellbeing and work performance, Journal of Wind Engineering & Industrial Aerodynamics, 133, 2, pp. 39-51, (2014)
  • [3] Raimo N, Hannu K., Stratification of welding fumes and grinding particles in a large factory Hall equipped with displacement ventilation, The Annals of Occupational Hygiene, 45, 6, pp. 467-471, (2001)
  • [4] Yuan X X, Chen Q Y, Leon R G, Performance evaluation and design guidelines for displacement ventilation, ASHRAE Transactions, 105, 1, pp. 298-309, (1999)
  • [5] Kang J H, Lee S J., Improvement of natural ventilation in a large factory building using a louver ventilator, Building and Environment, 43, 12, pp. 2132-2141, (2008)
  • [6] Ren Jiayou, Wang Ziyun, Gao Yuan, Et al., Numerical simulation of natural convection heat transfer in flue gas driven air in vertical channels, Refrigeration & Air Conditioning (Sichuan), 33, 1, pp. 1-5, (2019)
  • [7] Deng Q H, Tang G F., Numerical visualization of mass and heat transport for conjugate natural convection/heat conduction by streamline and heatline, International Journal of Heat and Mass Transfer, 45, 11, pp. 2373-2385, (2002)
  • [8] Gao Ting, Study on the optimization design of natural ventilation in large steel plant based on CFD numerical simulation technology, (2011)
  • [9] Wang Xiaotong, Wu Wenfei, Analysis of the influence of heat source characteristics on the thermal stratification height of displacement ventilation, Building Energy & Environment, 24, 3, pp. 69-72, (2005)
  • [10] Ma Xiangxue, Li Can, Effect test of displacement ventilation in large space welding workshop, Electric Welding Machine, 41, 2, pp. 48-51, (2011)
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