| LAMINAR FLOW AND HEAT TRANSFER IN THE DEVELOPING REGION OF HELICAL SQUARE DUCTS |
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| 引用本文： | CHENHua-jun SHENXin-rong ZHANGBen-zhao. LAMINAR FLOW AND HEAT TRANSFER IN THE DEVELOPING REGION OF HELICAL SQUARE DUCTS[J]. 水动力学研究与进展(B辑), 2004, 16(3): 267-275 |
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| 作者姓名： | CHENHua-jun SHENXin-rong ZHANGBen-zhao |
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| 作者单位： | DepartmentofMechanics,ZhejiangUniversity,Hangzhou310027,China, |
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| 基金项目： | ProjectsupportedbytheNationalNaturalScienceFoundationofChina (GrantNo :10 2 72 0 96 ) |
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| 摘 要： | Simultaneous development of the laminar flow and heat transfer in helical square ducts was numerically studied. The governing equations were written in an orthogonal helical coordinate system and fully parabolized in the axial direction. Results were found out over a wide range of the governing parameters. Two axial velocity entries were taken into account. The development of secondary flow, axial velocity and temperature distribution for the large Dean number were examined in detail and the effects of different governing parameters on the friction factor and the Nusselt number were annlyzee. Many new and interesting conclusions were reached. The present results reveal the nature of fluid flow and heat transfer in the developing region of helical square ducts.
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| 关 键 词： | 次流体 显影流 热传递 螺旋状直角管 控制参数 温度分布 |
LAMINAR FLOW AND HEAT TRANSFER IN THE DEVELOPING REGION OF HELICAL SQUARE DUCTS |
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| CHEN Huajun,SHEN Xinrong,ZHANG Benzhao. LAMINAR FLOW AND HEAT TRANSFER IN THE DEVELOPING REGION OF HELICAL SQUARE DUCTS[J]. Journal of Hydrodynamics, 2004, 16(3): 267-275 |
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| Authors: | CHEN Huajun SHEN Xinrong ZHANG Benzhao |
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| Affiliation: | CHEN Huajun,SHEN Xinrong,ZHANG BenzhaoDepartment of Mechanics,Zhejiang University,Hangzhou 310027,China |
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| Abstract: | Simultaneous development of the laminar flow and heat transfer in helical square ducts was numerically studied. The governing equations were written in an orthogonal helical coordinate system and fully parabolized in the axial direction. Results were found out over a wide range of the governing parameters. Two axial velocity entries were taken into account. The development of secondary flow, axial velocity and temperature distribution for the large Dean number were examined in detail and the effects of different governing parameters on the friction factor and the Nusselt number were annlyzee. Many new and interesting conclusions were reached. The present results reveal the nature of fluid flow and heat transfer in the developing region of helical square ducts. |
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| Keywords: | secondary flow developing flow heat transfer helical square ducts |
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