中文摘要：

为研究正弦波形填料基底上液膜的流动、传热特性及不同结构该基底的冷却效果对电厂热经济性的影响,通过建立合理的物理模型,运用Fluent软件对不同振幅、波长和倾斜角度条件下正弦波形填料基底上的冷却液膜进行了数值模拟.以数值模拟的出口水温为计算依据,通过热力计算分析了不同正弦波基底结构对全厂热经济性指标的影响.结果表明：倾斜角度、振幅不变时,随着波长的增加,基底上液膜的厚度变薄,出口水温升高;波长、振幅不变时,倾斜角度的增大使得基底上液膜的厚度增加,出口水温降低;倾斜角度、波长不变时,随着振幅的增大,基底上液膜的厚度变厚,出口水温降低.

英文摘要：

To study the flow and heat transfer characteristics of liquid film flowing on the packing with sine wave form and to analyze the influence of its cooling effect on thermal economy of the power plant, numer- ical simulations were conducted to the liquid film with different amplitudes, wavelengths and at different inclined angles using Fluent software based on reasonable physical models. According to the outlet water temperature obtained by numerical simulation, the effects of the packing structure on thermal economy of the power plant were analyzed. Results show that for fixed inclined angle and amplitude, the film thick- ness reduces and the outlet water temperature increases with rising wavelength; for fixed wavelength and amplitude, the film thickness increases and the outlet water temperature drops with rising inclined angle; for fixed inclined angle and wavelength, the film thickness increases while the outlet water temperature drops with rising amplitude.