flow and heat transfer of nanofluids over a rotating disk with uniform stretching rate in the radial direction

flow and heat transfer of nanofluids over a rotating disk with uniform stretching rate in the radial direction

;Chenguang Yin;Liancun Zheng;Chaoli Zhang;Xinxin Zhang
environmental nanotechnology, monitoring and management 2017 Vol. 6 pp. 25-30
189
yin2017propulsionflow

Abstract

This paper studies flow and heat transfer of nanofluids over a rotating disk with uniform stretching rate. Three types of nanoparticles-Cu, Al2O3 and CuO-with water-based nanofluids are considered. The governing equations are reduced by Von Karman transformation and then solved by the homotopy analysis method (HAM), which is in close agreement with numerical results. Results indicate that with increasing in stretching strength parameter, the skin friction and the local Nusselt number, the velocity in radial and axial directions increase, whereas the velocity in tangential direction and the thermal boundary layer thickness decrease, respectively. Moreover, the effects of volume fraction and types of nanofluids on velocity and temperature fields are also analyzed.

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ID: 239780
Ref Key: yin2017propulsionflow
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0x95644003c57E6F55A65596E3D9Eac6813e3566dA
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239780
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10.1016/j.jppr.2017.01.004
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Scimatic Chain (ID: 481)
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