PREDICTION OF FLOW FIELDS GENERATED BY RUSHTON TURBINE

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PREDICTION OF FLOW FIELDS GENERATED BY RUSHTON TURBINE

HOU Shuandi ZHANG Zheng,WANG Yingchen and SHI Litian (Research Institute of Petroleum Processing,Beijing 100083,China) (Beijing University of Chemical Technology, Beijing 100029,China)

Online:2001-03-25 Published:2001-03-25

涡轮桨搅拌槽流动场数值模拟

侯拴弟,张政,王英琛,施力田

石油化工科学研究院!北京100083,北京化工大学化学工程系!北京100029,北京化工大学化学工程系!北京100029,北京化工大学化学工程系!北京100029

Abstract

Abstract: Two sets of instantaneous flow fields generated by a Rushton turbine are simulated in the rotating reference coordinate based on standard k-ε turbulent model.The model predictions successfully reproduce the “two circulation loop” flow pattern in a Rushton turbine stirred tank. The simulation-results also show that the radial flow pattern is transferred to axial flow pattern at C/T ?=?0.167. The model prediction power number ( N p) and the impeller flow number ( N qd ) are in good agreement with the experimental data. The model prediction velocity distributions of this study agree with experimental measurements,and are in closer agreement with the experimental data than those based on “block box” method.

摘要： 在旋转坐标系下 ,采用k-ε湍流模型模拟了两个时间瞬间六直叶涡轮搅拌槽内流体流动状态 ,模型成功地再现了六直叶涡轮搅拌槽内“双循环”流动形式 .模拟结果表明当桨叶离底距离C/T =0 .16 7时 ,槽体内流动从径向流动转化为轴向流动 .模拟计算搅拌功率准数及桨叶排出流量准数与实验结果相差很小 ,数值模拟速度分布与实验测量结果吻合较好 ,且预测速度数值明显优于“黑箱”模拟方法

CLC Number:

O368

HOU Shuandi ZHANG Zheng,WANG Yingchen and SHI Litian (Research Institute of Petroleum Processing,Beijing 100083,China) (Beijing University of Chemical Technology, Beijing 100029,China). PREDICTION OF FLOW FIELDS GENERATED BY RUSHTON TURBINE[J]. .

侯拴弟,张政,王英琛,施力田. 涡轮桨搅拌槽流动场数值模拟 [J]. CIESC Journal.

[1]	Ruan Xiaodong and Fan Yurun (State Key Laboratory of Fluid Power Transmission and Control,Zhejiang University, Hangzhou 310027)Song Xiangqun and Yamamoto Fujio (Department of Mechanical Engineering, Fukui University, Fukui 910 8517). FLOW FIELD AND MIXING RESULT IN MIXER BY FLOW VISUALIZATION TECHNIQUE [J]. , 2000, 51(1): 137-140.
[2]	Ding Wenyun;Wang Yingchen;Gao Zhengming;Shi Litian;Liu Qing(College of Chemical Engineering,Beijing University of Chemical Technology,Beijing 100029)(Research Institute of Yansan Petrochemical Corporation,Beijing 102549). FLOW PATTERN IN TRANSITION REGIME OF MULTIPLE PROPELLERS BY USING 3-D PDA [J]. , 1998, 49(2): 170-175.
[3]	Wang Zhi and Wang Shichang (Chemical Engineering Reaeach Center, Tianjin University, Tianjin 300072). HYDRODYNAMIC INSTABILITY OF CASTING FILM SOLUTION AND OPTIMUM THICKNESS OF ULTRATHIN MEMBRANE [J]. , 1994, 45(1): 1-9.