脉动气流对竖直平板降膜蒸发影响的数值模拟研究
摘要
A 2D physical and mathematical model for vertical plate falling film evaporation was established. The effects of pulsating airflow on the falling film evaporation process were studied through numerical simulation. The change rule of the Sherwood number under different average air velocities, amplitudes and frequencies was analyzed. The results show that, when the relative amplitude of pulsation is 5/6, the mass transfer efficiency of the vertical falling film will increase by 6.6%; when the Womersley number is greater than 26, the mass transfer efficiency will increase by 8.3%. Compared with uniform airflow, the pulsating airflow can effectively enhance the convective mass transfer of falling film evaporation.
引用本文（GB/T 7714）
钟音，凌长明，谢公南, ZHONG Yin, LING Changming, 等. 脉动气流对竖直平板降膜蒸发影响的数值模拟研究[J]. 应用数学和力学, 2020.
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