Enhancement of Heat Transfer over Spatial Stationary and Moving Sinusoidal Wavy Wall: A Numerical Analysis

Prashant Kumar; Frédéric Topin; Lounes Tadrist

doi:10.4028/www.scientific.net/DDF.326-328.341

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HomeDefect and Diffusion ForumDefect and Diffusion Forum Vols. 326-328Enhancement of Heat Transfer over Spatial...

Enhancement of Heat Transfer over Spatial Stationary and Moving Sinusoidal Wavy Wall: A Numerical Analysis

Abstract:

Heat transfer phenomena are numerically studied with standing waves inside the tubes for stationary and moving sinusoidal wavy walls. Effects of spatial wavelengths (= 1/2, 2/3, 1 and 2 mm), Reynolds number (1-120), frequency (0-60 Hz) and amplitude (1%-20% of tube diameter, d) on heat transfer and pressure drop are studied. For stationary wall case, upon increasing the number of sine waves, the Nusselt number starts to decrease; the associated pressure drop and friction factor increases very rapidly at highest value of amplitude. Heat transfer enhancement characteristics on a moving sinusoidal wavy-walled tube with imposed frequency (0

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Periodical:

Defect and Diffusion Forum (Volumes 326-328)

Pages:

341-347

DOI:

https://doi.org/10.4028/www.scientific.net/DDF.326-328.341

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Online since:

April 2012

Authors:

Prashant Kumar, Frédéric Topin, Lounes Tadrist

Keywords:

Heat Transfer, Merit Factor, Moving Wall, Pressure Drop, Static

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