自然通风湿式冷却塔空气动力场数值分析
Thermal Power Generation(2006)
Abstract
对电厂自然通风逆流式双曲线冷却塔内的空气动力场进行了数值分析,并利用PHOENICS计算平台进行了数值模拟。分析结果认为:冷却塔无风运行时,塔内形成负压,压力沿塔高逐渐升高;塔内流场呈轴对称分布时,塔内周向分布均匀,中心流速最大。由于冷却塔的冷却能力受环境的影响很大,还对淋水密度、环境温度、阻力变化等各种变工况进行了计算与比较,发现入塔水温与淋水密度对塔内流场的影响基本相当。
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Key words
water-spraying density,aerodynamic field,cooling tower,numerical simulation,cooling power,thermal power plant
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