轴流泵式混合室内水力学特征的数值模拟  

Numerical simulation of hydraulic characteristics in axial flow pump type mixer

作　　者：谷世良 谭博仁 程全中 姚玮洁 董志鹏 许峰 王勇[1,2] GU Shiliang;TAN Boren;CHENG Quanzhong;YAO Weijie;DONG Zhipeng;XU Feng;WANG Yong(Institute of Process Engineering,Chinese Academy of Sciences,Beijing 100190,China;University of Chinese Academy of Sciences,Beijing 101400,China;Zhihui(Tianjin)Engineering Co.,Ltd.,Tianjin 300450,China;Hebei Lansheng Biotech,Shijiazhuang 052263,Hebei,China)

机构地区：[1]中国科学院过程工程研究所,北京100190 [2]中国科学院大学,北京101400 [3]智汇(天津)工程设计院有限公司,天津300450 [4]河北兰升生物科技有限公司,河北石家庄052263

出　　处：《化工学报》2024年第3期815-822,F0003,共9页CIESC Journal

基　　金：国家自然科学基金重大研究计划集成项目(92262305);国家自然科学基金面上项目(22178350);中国科学院稳定支持基础研究领域青年团队计划项目(YSBR-038);国家重点研发计划项目(2023YFC2908100);河北省重大科技成果转化专项(22293601Z)。

摘　　要：混合澄清槽是重要的萃取分离设备,采用计算流体力学(CFD)方法研究了一种新型轴流泵式混合澄清槽内流体流动与剪切力,确定了搅拌桨型对混合室内的平均剪切速率、剪切速率空间分布、剪切速率概率分布的影响,结果表明:与传统泵轮式混合室相比,轴流泵式混合室内锥形泵及双桨叶的搭配可以大幅提高混合室的抽吸力与剪切力,搭配六叶半闭式涡轮桨后抽吸力可提升87%,混合室平均剪切速率提升90%,同时轴流泵式混合室内剪切力的分布更加均匀。The mixing and clarifying tank is an important extraction and separation equipment.In this study,computational fluid dynamics(CFD)method was used to study the fluid flow and shear force in a new type of axial flow pump type mixer(AFPM).The impact of the impeller type on average shear rate,spatial distribution of shear rate,and probability distribution of shear rate in the mixing chamber was analyzed.The results demonstrate that the combination of the conical pump and double blade yields significantly improved suction and shear force compared to traditional mixers.Furthermore,the six-bladed semi-closed turbine(SBSCT)blade can increase suction force by 87%and average shear rate by 90%.The axial flow pump also provides a more evenly distributed shear force within the mixing chamber.

关 键 词：数值模拟 计算流体力学 轴流泵式混合室 萃取 

分 类 号：TQ051[化学工程]