本文關(guān)鍵詞：鼓風(fēng)式機(jī)械通風(fēng)冷卻塔空氣動(dòng)力特性數(shù)值模擬研究，由筆耕文化傳播整理發(fā)布。

鼓風(fēng)式機(jī)械通風(fēng)冷卻塔空氣動(dòng)力特性數(shù)值模擬研究 摘要：鼓風(fēng)式機(jī)械通風(fēng)冷卻塔常用于核電廠的重要廠用水系統(tǒng)，但相關(guān)設(shè)計(jì)規(guī)范并沒有給出冷卻塔的空氣動(dòng)力特性計(jì)算公式。本文采用Fluent軟件對鼓風(fēng)式機(jī)械通風(fēng)冷卻塔的空氣動(dòng)力進(jìn)行了數(shù)值模擬計(jì)算，對冷卻塔的設(shè)計(jì)布置進(jìn)行了優(yōu)化，分析總結(jié)給出了冷卻塔阻力計(jì)算公式。結(jié)果表明，填料安裝位置對鼓風(fēng)式機(jī)械通風(fēng)冷卻塔整塔阻力影響不大，但會(huì)影響填料斷面風(fēng)速分布均勻性，填料安裝高度越低，，風(fēng)速分布越均勻；出口收縮段的高度越高，整塔阻力越小，風(fēng)速分布越均勻；出口收縮段與水平的夾角越大，整塔阻力系數(shù)越小，但變化趨勢不明顯，收縮角基本不影響填料斷面風(fēng)速分布均勻性。 關(guān)鍵詞：鼓風(fēng)式冷卻塔；塔型；阻力系數(shù)；風(fēng)速均勻性 Abstract: The forced draft mechanical cooling tower is always used in a nuclear power plant, while the relevant design specifications have not formula about the aerodynamic characteristics of cooling tower. This paper uses FLUENT software to simulate and study the aerodynamic characteristics of the forced draft mechanical cooling tower, and optimize the design of the cooling tower, and analysis to summarize the cooling tower resistance calculative formula. The results show that the height of the fill has little effects on the whole tower resistance coefficient, but it influences the wind velocity distribution uniformity of the fill section, the lower the position is, the more?uniform the wind velocity distribution is; the convergent section height is higher, the whole tower resistance is smaller and the wind velocity distribution is more uniform. The angle between convergent section and horizon is bigger, the whole tower resistance is smaller, while this trend is not obvious, it does not affect the wind velocity distribution uniformity on the fill sect

  本文關(guān)鍵詞：鼓風(fēng)式機(jī)械通風(fēng)冷卻塔空氣動(dòng)力特性數(shù)值模擬研究，由筆耕文化傳播整理發(fā)布。