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Numerical Study of Turbulent Flow and Convective Heat Transfer Characteristics in Helical Rectangular Ducts
Xing YF(邢云绯); Zhong FQ(仲峰泉); Zhang XY(张新宇); Zhong, FQ (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China.
Source PublicationJOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME
2014-12
Volume136Issue:12Pages:121701
ISSN0022-1481
AbstractThree-dimensional turbulent forced convective heat transfer and its flow characteristics in helical rectangular ducts are simulated using SST k-omega turbulence model. The velocity field and temperature field at different axial locations along the axial direction are analyzed for different inlet Reynolds numbers, different curvatures, and torsions. The causes of heat transfer differences between the inner and outer wall of the helical rectangular ducts are discussed as well as the differences between helical and straight duct. A secondary flow is generated due to the centrifugal effect between the inner and outer walls. For the present study, the flow and thermal field become periodic after the first turn. It is found that Reynolds number can enhance the overall heat transfer. Instead, torsion and curvature change the overall heat transfer slightly. But the aspect ratio of the rectangular cross section can significantly affect heat transfer coefficient.
KeywordHelical Rectangular Duct Heat Transfer Turbulent Flow Curvature Torsion
Subject AreaThermodynamics ; Engineering
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000345262600004
Funding OrganizationThe authors gratefully acknowledge the financial support of the National Natural Science Foundation of China (Nos. 11202218 and 11172309).
DepartmentLHD高超声速推进技术
Classification二类/Q1
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/49438
Collection高温气体动力学国家重点实验室
Corresponding AuthorZhong, FQ (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Xing YF,Zhong FQ,Zhang XY,et al. Numerical Study of Turbulent Flow and Convective Heat Transfer Characteristics in Helical Rectangular Ducts[J]. JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME,2014,136(12):121701.
APA Xing YF,Zhong FQ,Zhang XY,&Zhong, FQ .(2014).Numerical Study of Turbulent Flow and Convective Heat Transfer Characteristics in Helical Rectangular Ducts.JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME,136(12),121701.
MLA Xing YF,et al."Numerical Study of Turbulent Flow and Convective Heat Transfer Characteristics in Helical Rectangular Ducts".JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME 136.12(2014):121701.
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