| UNSTEADY INTERMITTENT FLOW IN A ROTATING CURVED PIPE |
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| 作者姓名： | YINJian-an SHENXin-rong CHENHua-jun ZHANGBen-zhao |
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| 作者单位： | DepartmentofMechanics,ZhejiangUniversity,Hangzhou310027,China,e-mail：mec-zbzq@emb,zju.edu.cn |
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| 基金项目： | ProjectsupportedbytheNationalNaturalScienceFoundationofChina.(GrantNo :10 2 72 0 96 ) |
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| 摘 要： | The effects of rotation and intermittent frequency on the flow transition of secondary flow and. main flow were examined in detail. Certain hitherto unknown flow patterns were found. ,‘% numerical study was performed to study the characteristics of unsteady intermittent flow in a rorating curved pipe. Due to the rotation, both the Coriolis for ceand the centrifugal force could contribute to the unsteady intermittent flow and some complicated phenomena can be found. The results indicate that the unsteady intermittent floware mainly characterized by five parameters: the Dean number Dn, the curvature κ. the maximal force ratio F (of the Coriolis force to the centrifugal force in a cycle), the intermittent frequency parameter r/(the ratio of a pulslating time to the cycle period), and the Womersley number a. Present works shows the natures of the unsteady intermittent flow in a rotating curved pipe.
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| 关 键 词： | 不稳定流 回转曲线管 流体力学 二级流动 |
UNSTEADY INTERMITTENT FLOW IN A ROTATING CURVED PIPE |
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| YINJian-an SHENXin-rong CHENHua-jun ZHANGBen-zhao.UNSTEADY INTERMITTENT FLOW IN A ROTATING CURVED PIPE[J].Journal of Hydrodynamics,2004,16(2):158-165. |
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| Authors: | YIN Jian-an SHEN Xin-rong CHEN Hua-jun ZHANG Ben-zhao |
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| Institution: | YIN Jian-an,SHEN Xin-rong,CHEN Hua-jun,ZHANG Ben-zhao Department of Mechanics,Zhejiang University,Hangzhou 310027,China |
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| Abstract: | |
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| Keywords: | unsteady flow secondary flow rotating pipes |
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