Forced convection in a wavy-wall channel |
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Authors: | C-C WangC-K Chen |
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Affiliation: | Department of Mechanical Engineering, National Cheng-Kung University, Tainan, Taiwan 701 People's Republic of China |
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Abstract: | The rates of heat transfer for flow through a sinusoidally curved converging-diverging channel has been analyzed using a simple coordinate transformation method and the spline alternating-direction implicit method. The effects of the wavy geometry, Reynolds number and Prandtl number on the skin-friction and Nusselt number have been studied. Results show that the amplitudes of the Nusselt number and the skin-friction coefficient increase with an increase in the Reynolds number and the amplitude-wavelength ratio. The heat transfer enhancement is not significant at smaller amplitude wavelength ratio, however, at a sufficiently larger value of amplitude wavelength ratio the corrugated channel will be seen to be an effective heat transfer device, especially at higher Reynolds numbers. |
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Keywords: | Forced convection Wavy-wall channel Cubic spline |
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