摘要
根据动量叠加原理对多股等羽流的相互作用进行了研究 ,定义了三个速度修正系数和流量修正系数。通过数值计算 ,分析了平均速度修正系数、流量修正系数随高度和热源间距的变化规律。将相互作用的多股等羽流应用于一种高大空间二区自然通风模型 ,计算结果显示多股等羽流的相互作用提高了热分层高度 ,增加了通风量 ,对高大空间自然通风的影响十分明显。
Researches the interaction of the multiple equal plumes based on the principle of momentum congruence. Defines three velocity correction coefficients and a flow rate correction coefficient. By numerical solutions, analyses the variation regularity of the mean velocity correction coefficient and flow rate correction coefficient with the height above the point heat sources and the distance between adjacent sources. Applying the interaction of multiple equal plumes to a two-zonal natural ventilation model, the calculating results show that the interface is higher and the ventilation rate is larger compared to that of separate plumes under the same conditions. Thus the interaction of multiple equal plumes has significant influence on the natural ventilation in high-large spaces.
出处
《暖通空调》
北大核心
2004年第10期21-28,共8页
Heating Ventilating & Air Conditioning
