基于灰色关联度的围岩与风流对流换热系数影响因素分析

发布时间：2018-03-25 10:48

本文选题：围岩　切入点：风流　出处：《矿业研究与开发》2017年11期

【摘要】：基于相似理论搭建矿井通风降温模拟实验台,利用控制变量法进行实验,测得不同条件下围岩与风流间的对流换热系数,以围岩与风流对流换热系数作为主序列,以围岩温度、风流温度、风流速度作为子序列,利用灰色关联度分析方法得到不同影响因素与对流换热系数的关联程度。研究结果表明,在所选取的围岩温度、风流温度、风流速度3个子序列中,风流速度与围岩对流换热系数的关联度最大,其次是风流温度,围岩温度对其影响最小。在矿井通风降温系统的设计中应尽可能地增加风流速度。
[Abstract]:Based on the similarity theory, the simulation test bench of mine ventilation cooling is built, and the convection heat transfer coefficient between surrounding rock and wind flow is measured under different conditions by using the control variable method. The convection heat transfer coefficient of surrounding rock and air flow is taken as the main sequence, and the surrounding rock temperature is taken as the main sequence. The correlation degree of different factors and convection heat transfer coefficient is obtained by using grey correlation degree analysis method. The results show that the selected surrounding rock temperature, air flow temperature, Among the three sub-sequences of air flow velocity, the correlation degree between air flow velocity and convection heat transfer coefficient of surrounding rock is the largest, followed by air flow temperature, and the influence of surrounding rock temperature on it is the least. In the design of mine ventilation and cooling system, the air flow velocity should be increased as much as possible.
【作者单位】：西安科技大学能源学院;
【基金】：国家自然科学基金项目(51404191)
【分类号】：TD727.2

【相似文献】