底部对数螺线挡板搅拌釜LDV实验和数值模拟
摘要
利用LDV实验与CFD数值模拟方法,研究了采用底部对数螺线挡板搅拌釜的流场特性,并与采用传统侧壁直立挡板和底部十字型挡板搅拌釜的流场进行了对比。结果表明:采用底部对数螺线挡板搅拌釜流场CFD数值模拟结果与LDV实验验证结果数值相近,吻合度高;采用底部对数螺线挡板的搅拌釜流场在轴向混合上得到强化;混合均匀所需时间明显缩短;搅拌功率较采用底部十字型挡板搅拌釜略有提高,但比采用传统侧壁直立挡板搅拌釜大大降低。
引文
[1]Zhao Yanchun,Li Xiangyang,Cheng Jingcai.Experimental study on liquid-liquid macro-mixing in a stirred tank[J].Industrial&Engineering Chemistry Research,2011,50(10):5952-5958.
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[3]Luo Jie,Lv Jinmao,Shen Rongchun.Effects of baffle on the mixing effectiveness of a cross-flow jet mixer[J].Chemical Reaction Engineering and Technology,2006,22(3):199-205.
[4]张翠勋,杨锋苓,连继咏.“波纹”内壁搅拌槽内的湍流流动特性[J].化工进展,2015,34(4):941-946.
[5]李岩,刘雪东,钱建峰.新型搪玻璃搅拌桨搅拌特性数值模拟及实验研究[J].化工进展,2013,32(9):2056-2060.
[6]张慧敏,廖辉良,胡守明,等.开启涡轮式搅拌器的流场分析及结构优化[J].中国农机化学报,2016,37(6):58-63.
[7]王星星,刘志炎,龙伟民,等.椭圆底封头十字形挡板搅拌釜内流场研究[J].机械工程学报,2014,50(6):156-164.
[8]Galletti C,Brunazzi E,Pintus S.Study of Reynold stresses triple products and turbulence states in a radially stirred tank with3-D laser anemometry[J].Chemical Engineering Research and Design,2004,82(9):1214-1228.
[9]Vakili M H,Nasr M.CFD analysis of turbulence in a baffled stirred tank,a three-compartment model[J].Chemical Engineering Science,2009,64(2):351-362.[1 0]To r r e J P,F l e t c h e r F D,L a s u y e T.S i n g l e a n d m u l t i p h a s e C F D a p p r o a c h e s f o r m o d e l l i n g p a r t i a l l y baffled stirred vessels:comparison of experimental data with numerical predictions[J].Chemical Engineering Science,2007,62(22):6246-6262.
[2]潘传九,葛文娜,陆晓峰.基于CFD的搅拌釜流场数值模拟及预测[J].化工进展,2012,31(增刊二):87-91.
[3]Luo Jie,Lv Jinmao,Shen Rongchun.Effects of baffle on the mixing effectiveness of a cross-flow jet mixer[J].Chemical Reaction Engineering and Technology,2006,22(3):199-205.
[4]张翠勋,杨锋苓,连继咏.“波纹”内壁搅拌槽内的湍流流动特性[J].化工进展,2015,34(4):941-946.
[5]李岩,刘雪东,钱建峰.新型搪玻璃搅拌桨搅拌特性数值模拟及实验研究[J].化工进展,2013,32(9):2056-2060.
[6]张慧敏,廖辉良,胡守明,等.开启涡轮式搅拌器的流场分析及结构优化[J].中国农机化学报,2016,37(6):58-63.
[7]王星星,刘志炎,龙伟民,等.椭圆底封头十字形挡板搅拌釜内流场研究[J].机械工程学报,2014,50(6):156-164.
[8]Galletti C,Brunazzi E,Pintus S.Study of Reynold stresses triple products and turbulence states in a radially stirred tank with3-D laser anemometry[J].Chemical Engineering Research and Design,2004,82(9):1214-1228.
[9]Vakili M H,Nasr M.CFD analysis of turbulence in a baffled stirred tank,a three-compartment model[J].Chemical Engineering Science,2009,64(2):351-362.[1 0]To r r e J P,F l e t c h e r F D,L a s u y e T.S i n g l e a n d m u l t i p h a s e C F D a p p r o a c h e s f o r m o d e l l i n g p a r t i a l l y baffled stirred vessels:comparison of experimental data with numerical predictions[J].Chemical Engineering Science,2007,62(22):6246-6262.