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Solving on Momentum Thickness for Cylinder Impeller |
MA Lei, YANG Jun-hu |
Lanzhou University of Technology, Lanzhou 730050, China |
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Abstract The reynolds equation is given and the relevant quantities are analyzed. By type factors and transitional momentum integral equation, the approximate expression of momentum thickness is presented as well. The wake laws are applied to deduce relative expressions of turbulent boundary layer thickness; the expressions are regarded as the auxiliary relational expressions to solve momentum thickness. A method is presented that by boundary layer thickness coefficient k δ and momentum thickness δ 2 the fluid calculation without centrifugal force approaches the fluid calculation with centrifugal force gradually. These will be the basiso f further analysis oft hel ow-specific-speed centrifugalp ump.
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Received: 08 August 2013
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[1] 朱玉才,等.离心泵叶片边界层的解析解[J].流体机械,2003(6):20-22[2] 南京工学院,等.粘性流体力学[M].上海:高等教育出版社上海分社,1987[3] 王致清.粘性流体力学[M].哈尔滨:哈尔滨工业大学出版社,1990 |
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