哈尔滨工程大学学报Issue(3)：320-324,377,6.DOI:10.3969/j.issn.1006-7043.201303025
单侧有限宽度开缝竖通道内的旋转热流体特性
Characteristics of rotating thre mal fluid in a vertical shaft with a confined single corner gap
摘要
Abstract
With the purpose to increase the understanding of the relation between fire whirls and the corner gap of the vertical shaft , experiments for the fire whirl were carried out on a vertical shaft at a height of 9 m and the width of the corner gap of the fire whirl formation was verified .Thermal fields were numerically simulated when the width of the corner gap over 4 m was confined .The study shows that the airflow rate at the lower part of the shaft and the rotation speed near the flame are a little higher after the width of the upper corner gap is confined .The effect of the whirling force on the thermal field is more than buoyancy , and the deflection of the center of rotation is made .Com-pared to when the width of the upper corner gap is not confined , the height of the neutral plane is lower and the an-gle of the neutral plane decreases to almost zero when the corner gap is confined .In addition, at the wall of the cor-ner gap near the front of the shaft , the flow velocity increases as the width of the corner gap increases , instead of decreasing with the increase of the width of the corner gap when the upper corner gap is not confined .关键词
竖直通道/受限侧开缝/旋转火焰/热流体Key words
vertical shaft/confined corner gap/fire whirls/thermal fluid分类
建筑与水利引用本文复制引用
霍岩,邹高万,李树声,郜冶..单侧有限宽度开缝竖通道内的旋转热流体特性[J].哈尔滨工程大学学报,2014,(3):320-324,377,6.基金项目
国家自然科学基金资助项目（51206030）；中央高校基本科研业务费专项基金资助项目（ HEUCF130203）． （）
