Abstract
A three-dimensional numerical study on the flow and heat transfer characteristics over a rotating disk surface with discrete pins was conducted by the use of RNG k–ε turbulent model. And some experiments were also made for validation. The effects of rotating angular speed and pin configuration on the temperature maps and convective heat transfer characteristics on the rotating surface were analyzed. As the increase of rotating velocity, the impingement of pumping jet on the centre of rotating disk becomes stronger and the transition from laminar to turbulent occurs at the outer radius of rotating disk, which resulting in heat transfer enhancement. The pins on the disk make the pumping action of a rotating disk weaker. Simultaneously, they also act as perturbing elements to the cyclone flow near the rotating disk surface, making the overall heat transfer to be enhanced. The needle pins have higher convective heat transfer capacity than the discrete ring pins with the same extend pin areas.
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References
El-Oun Z, Owen JM (1989) Pre-swirl blade-cooling effectiveness in an adiabatic rotor-stator system. ASME J Turbomach 111:522–529
Jin T, Stephenson DJ (2006) Analysis of grinding chip temperature and energy partitioning in high-efficiency deep grinding. J Eng Manuf 220:615–625
Malkin S, Guo C (2007) Thermal analysis of grinding. Ann CIRP 56:760–782
Browne AL, Wickliffe LE (1980) Parametric study of convective heat transfer coefficients at the tire surface. Tire Sci Technol 8:37–67
Zhang JZ, Tan XM, Liu B et al (2013) Investigation for convective heat transfer on grinding work-piece surface subjected to a mist/air impinging jet. Appl Therm Eng 51:653–661
Zhu XD, Zhang JZ, Tan XM (2013) Numerical simulation on heat transfer inside rotating porous disk subjected to local heat flux. Sci China Technol Sci 56:1657–1666
Littell HS, Eaton JK (1994) Turbulence characteristics in the boundary layer on a rotating disk. J Fluid Mech 266:175–207
Northorp A, Owen JM (1998) Heat transfer measurements in rotating disc systems, part 1: the free disc. Int J Heat Fluid Flow 9:19–26
Pilbrow R, Karabay H, Wilson M, Owen JM (1999) Heat transfer in a cover-plate preswirl rotating disk system. ASME J Turbomach 121:249–256
Tadros SE, Erian FF (1982) Generalized laminar heat transfer from the surface of a rotating disk. Int J Heat Mass Transfer 25:1615–1660
Evans GH, Greif R (1998) Forced flow near a heated rotating disk: a similarity solution. Fluid Mech 22:804–807
Palec GL (1989) Numerical study of convective heat transfer over a rotating rough disk with uniform wall temperature. Int Commun Heat Mass Transf 16:107–113
Cheng WT, Lin HT (1994) Unsteady and steady mass transfer by laminar forced flow against a rotating disk. Heat Mass Transf 30:101–108
Soong CY (2001) Thermal buoyancy effects in rotating non-isothermal flows. Int J Rotating Mach 7:435–446
Ogino F, Inamuro T, Mizuta K, Kino A, Tomita R (2002) Flow characteristics on a heated rotating disc under natural convection dominant conditions. Int J Heat Mass Transf 45:585–595
Attia HA (2003) Unsteady flow of a non-Newtonian fluid above a rotating disk with heat transfer. Int J Heat Mass Transf 46:2695–2700
aus der Wiesche S (2004) LES study of heat transfer augmentation and wake instabilities of a rotating disk in a planar stream of air. Heat Mass Transf 40(2004):271–284
He Y, Ma L, Huang S (2005) Convection heat and mass transfer from a disk. Heat Mass Transf 41:766–772
Axcell BP, Thianpong C (2001) Convective heat transfer to rotating disks with ribbed surfaces. Exp Heat Transf 14:45–58
Kline SJ, McClintock FA (1953) Describing uncertainties in single sample experiments. Mech Eng 75:3–8
Acknowledgments
The authors gratefully acknowledge the financial support for this project from the National Natural Science Foundation of China (grant No: 51076063).
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Zhang, JZ., Tan, XM. & Zhu, XD. Investigation on convective heat transfer over a rotating disk with discrete pins. Heat Mass Transfer 50, 85–94 (2014). https://doi.org/10.1007/s00231-013-1233-9
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DOI: https://doi.org/10.1007/s00231-013-1233-9