摘要
横向自然风对逆流式自然通风冷却塔内流动的影响,目前尚无明确的分析与结论。本文在紧凑的双层循环水槽上进行冷态水模试验研究,通过彩液法显示流动,用粘性剪切诱导涡、紊动射流概念分析流动特征,并在此基础上提出了斜坡巡行走道、“十”字形导风墙等避免自然风不良影响以改善塔内流动的措施,经试验证明是有效的。
At Present, the effect of the crossing natural wind upon the inner flow in the counterflow natural draught cooling tower has not been researched to a distinct end to furnish a definite conclusion. In this paper, the author presents the experimental research with the water modeling in cold mode in a compact doudle-decked circulating water channel, the flow being visualized with dyeing liquid. The characteristics of the flow is dissected, basing upon the concept of the induced vortex due to the viscous shear and the turvulent jet. On the bases of these observations and dissections, the author suggests the use of a sloping patrol platen and a cross-like guids wall to improve the flow in the cooling tower to avoid the ill effects of the natural wind. And all of thess suggestions are verified by tests.
出处
《上海力学》
CSCD
1991年第4期1-6,共6页
Chinese Quarterly Mechanics
