| 内外单螺带式搅拌器的Metzner常数 |
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| 引用本文： | 王嘉骏 冯连芳. 内外单螺带式搅拌器的Metzner常数[J]. 高校化学工程学报, 1999, 13(5): 442-446 |
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| 作者姓名： | 王嘉骏 冯连芳 |
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| 作者单位： | 浙江大学聚合反应工程国家重点实验室!浙江技州,310027,浙江大学聚合反应工程国家重点实验室!浙江技州,310027,浙江大学聚合反应工程国家重点实验室!浙江技州,310027,浙江大学聚合反应工程国家重点实验室!浙江技州,310027 |
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| 基金项目： | 国家自然科学基金!29776041 |
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| 摘 要： | 对１１种不同向何尺寸的内外单累带搅拌器（ＩＯ－ＨＲ）,在６６中不同流动行为指数（ｎ＝０．３７－１）的幂律流体中的剪切特性进行了实验研究。发现内外单螺带 的Ｍｅｔｚｎｅｒ常数,Ｋｓ与流动行为指数ｎ、桨的几何尺寸均相关。提出改进的数据处理方法来求算Ｋｓ,并详细分析了桨的几何尺寸和流体剪切稀化特性对Ｋｓ的影响。最后的对包括经典的Ｍｅｔｚｎｅｒ方法在内的不同求解Ｋｓ的方法做了分析比较。
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| 关 键 词： | 螺带式 搅拌器 混合 Metzner常数 非牛顿流体 |
Study of Metzner Constant of Inner-Outer Helical Ribbon Impellers |
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| WANG Jia-jun, FENG Lian-fang, GU Xue-ping, WANG Kai. Study of Metzner Constant of Inner-Outer Helical Ribbon Impellers[J]. Journal of Chemical Engineering of Chinese Universities, 1999, 13(5): 442-446 |
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| Authors: | WANG Jia-jun FENG Lian-fang GU Xue-ping WANG Kai |
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| Abstract: | The shear characteristics of inner-outer helical ribbon agitator (IO-HR) wereinvestigated with seven Newtonian and non-Newtonian fluids which covering a wide range ofrheological properties (n ranged from 0.37 to 1) and with eleven inner-outer helical ribbonagitators of different designs. It was shown that Metzner constant K varied strongly with thepower law index n and was a function of impeller geometry on the basis of experimentalresults. An improved correlation was proposed to predict Ks The influence of shear thinningbehavior and impeller geometry on Ks was analyzed in detail. Finally the predictions forMetzner constant Ks were compared with those obtained using other predictive methodsincluding the classical method of Metzner (1957) |
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| Keywords: | helical ribbon impeller mixing Metzner constant non-Newtonian fluid |
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