CFD-PBM simulation of bubble coalescence and breakup in top blown-rotary agitated reactor
作者机构：School of Materials and MetallurgyUniversity of Science and Technology LiaoningAnshan114051LiaoningChina
出 版 物：《Journal of Iron and Steel Research International》 (J. Iron Steel Res. Int.)
年 卷 期：2022年第29卷第2期
页 面：223-236页
核心收录：
学科分类：080602[工学-钢铁冶金] 08[工学] 0806[工学-冶金工程]
主 题：Top blown-rotary agitated reactor Bubble coalescence Bubble breakup Bubble size CFD-PBM Numerical simulation
摘 要：Gas–liquid flow and bubble coalescence and breakup behavior were studied in a top blown-rotary agitated reactor for *** important models of bubble coalescence and breakup mechanisms were considered and compared,and water model experiment was carried out to verify and optimize the mathematical *** influence of different operating parameters including paddle arrangement,stirring speed and top blowing flow rate on the bubble size and distribution was *** results show that the predicted bubble size and distribution present a good agreement with the experimental results using the improved Luo–Laakkonen combination *** the position of the stirring paddle moves from the center to the side wall,the bubble distribution in the reactor becomes more uniform,and the bubble size gradually *** the increase in the paddle rotation speed,the bubble size ***,this effect begins to weaken when the paddle rotation speed exceeds 150 r/*** the top blowing flow rate will increase the bubble size in the reactor,but it has a weak effect on bubble *** the top blowing rate exceeds 2.0 m^(3)/h,the bubble size in the bath is basically not less than 5 mm.
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