热源厂房通风有效性的数值分析  

Numerical analysis of validity of ventilation in heat workshop

作　　者：邹声华[1] 翁培奋[2] 张登春[1] 李刚[1] 段满清[1] 

机构地区：[1]湖南科技大学能源与安全工程学院,湖南湘潭411701 [2]上海大学上海市应用数学和力学研究所,上海200072

出　　处：《中南大学学报（自然科学版）》2007年第1期74-78,共5页Journal of Central South University:Science and Technology

摘　　要：采用k-ε紊流模型,利用ANSYS计算软件,对某热源厂房的自然通风进行数值计算,将生产线上的散热量作为能量方程的附加源项,预测厂房内的速度场和温度场。预测结果表明:降低进风口的标高以及减少通风障碍物对风流的影响,可增加作业区的有效风量,从而提高厂房的通风效果。厂房的通风改造实施后,验证了数值模拟的结果。热源厂房通风的有效性可以采用能量利用系数来衡量,也可以采用有效风量率和有效空间的速度不均匀性系数来衡量。By k-ε turbulence model and ANSYS software, the natural ventilation in a heat workshop was numerically simulated. The effect of radiation was taken into account and these auxiliary heat flows were the source terms of the energy equation. The distributions of the airflow and temperature fields in the workshop were numerically predicted. The results show that lowering the altitude of inlet air and roducing the effect of ventilation obstacle on airflow can increase the effective air volume of working zone, and accordingly improve the ventilation efficiency of workshop, The simulation results are verified by ventilation reform practice. The ventilation validity of heat workshop can be measured by energy- utilizing coefficient, effective air volume rate and velocity asymmetry coefficient of effective space.

关 键 词：热源 数值分析 温度场 能量方程 

分 类 号：TB126[理学—工程力学]