Numerical Study of Turbulent Flow and Heat Transfer Characteristics in Helical Rectangular Ducts

XING Yunfei; ZHONG Fengquan; ZHANG Xinyu

doi:10.7527/S1000-6893.2013.0231

ACTA AERONAUTICAET ASTRONAUTICA SINICA >

2013 , Vol. 34 >Issue 6: 1269 - 1276

DOI: https://doi.org/10.7527/S1000-6893.2013.0231

Fluid Mechanics and Flight Mechanics

Numerical Study of Turbulent Flow and Heat Transfer Characteristics in Helical Rectangular Ducts

XING Yunfei ,
ZHONG Fengquan ,
ZHANG Xinyu

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State Key Laboratory of High Temperature Gas Dynamics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China

Received date: 2012-07-10

Revised date: 2012-09-10

Online published: 2012-09-24

Supported by

National Natural Science Foundation of China (10902115, 11172309)

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Abstract

Three-dimensional turbulent forced convective heat transfer and its flow characteristics in a helical rectangular duct are simulated using a shear stress transport (SST) k-ω turbulence model and taking into consideration the modified low Reynolds number near the wall. The temperature,flow field and the streamline at different axial locations along the stream are analyzed for different Reynolds numbers, different curvatures and different torsions. The causes of the differences between the inner and outer walls of the helical rectangular ducts are discussed and the differences between the helical duct and straight channel are compared. A second flow in the helical duct caused by the centrifugal effect results in the differences between the inner and outer walls. For the present study, the flow is steady after the first roll. The Reynolds number can enhance the overall heat transfer, and torsion and curvature do not much change the heat transfer effect. But the rectangular configurations can significantly enhance the heat transfer coefficients. The results obtained from the present investigation are meant to serve as basic data for further cooling design using helical rectangular ducts.

Key words： helical duct; turbulence; curvature; heat transfer; rectangular

Cite this article

XING Yunfei , ZHONG Fengquan , ZHANG Xinyu . Numerical Study of Turbulent Flow and Heat Transfer Characteristics in Helical Rectangular Ducts[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2013 , 34(6) : 1269 -1276 . DOI: 10.7527/S1000-6893.2013.0231

References

[1] Aly W I, Inaba H, Haruki N, et al. Drag, and heat transfer reduction phenomena of drag-reducing surfactant solutions in straight and helical pipes. Journal of Heat Transfer, 2006, 128(8): 800-810.
[2] Kao H C. Torsion effect on fully developed flow in a helical pipe. Journal of Fluid Mechanics, 1987, 184(1): 335-356.
[3] Xin R C, Ebadian M A. The effects of Prandtl numbers on local and average convective heat transfer characteristics in helical pipes. Journal of Heat Transfer, 1997, 119 (3): 467-473.
[4] Wu S Y, Chen S J, Li Y R, et al. Numerical investigation of turbulent flow, heat transfer and entropy generation in a helical coiled tube with larger curvature ratio. Heat and Mass Transfer, 2009, 45(5): 569-578.
[5] Pizza I D, Ciofalo M. Numerical prediction of turbulent flow and heat transfer in helical coiled pipes. International Journal of Thermal Sciences, 2010, 49(4): 653-663.
[6] Moawed M. Experimental study of forced convection from helical coiled tubes with different parameters. Energy Conversion and Management, 2011, 52(2): 1150-1156.
[7] Thangam S, Hur N. Laminar secondary flows in curved rectangular ducts. Journal of Fluid Mechanics, 1990, 217: 421-440.
[8] Bolinder C J, Sunden B. Flow visualization and LDV measurements of laminar flow in a helical square duct with finite pitch. Experimental Thermal and Fluid Science, 1995, 11(4): 348-363.
[9] Bolinder C J. First and higher-order effects of curvature and torsion on the flow in a helical rectangular duct. Journal of Fluid Mechanics, 1996, 314: 113-138.
[10] Zabielski L, Mestel A J. Steady flow a helically symmetric pipe. Journal of Fluid Mechanics, 1998, 370(1): 297-320.
[11] Zabielski L, Mestel A J. Kinematic dynamo action in a helical pipe. Journal of Fluid Mechanics, 2005, 535: 347-367.
[12] Sakalis V D, Hatzikonstantinou P M, Papadopoulos P K. Numerical procedure for the laminar developed flow in a helical square duct. Journal of Fluid Engineering, 2005, 127(1): 136-148.
[13] Egner M W, Burmeister L C. Heat transfer for laminar flow in spiral ducts of rectangular cross section. Journal of Heat Transfer, 2005, 127(3): 352-356.
[14] Mori Y, Uchida Y, Ukon T. Forced convective heat transfer in a curved channel with a square cross section. International Journal of Heat Mass Transfer, 1971, 14(11): 1787-1805.
[15] Menter F R. Two-equation eddy-viscosity turbulence models for engineering applications. AIAA Journal, 1994, 32(8): 1598-1605.
[16] ANSYS Fluent, FLUENT 6.3 User's Guide. Fluent Inc. 2006.
[17] Sieder E N, Tate C E. Heat transfer and pressure drop of liquids in tubes. Industrial & Engineering Chemistry, 1936, 28(12): 1429-1435.

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