This paper presents the experimental results on heat transfer characteristics of air forced convection over not-thin plates with transverse and skewed ribs; data are obtained by means of infrared thermography. Compari¬sons of heat transfer distributions for ribbed plates with data over a flat plate suggest the following observations. The periodic development of the boundary layer is very well displayed by the local distribution of the convective heat transfer coefficient; for both enhanced surfaces, the average Nusselt number shows the same dependence on the Reynolds number than the flat plate; the en¬hancement factor is about 1.4 for both ribbed configura¬tion, without appreciable differences between them.

Heat transfer measurements by IR thermography over enhanced surfaces with skewed ribs

NIRO, ALFONSO
2009-01-01

Abstract

This paper presents the experimental results on heat transfer characteristics of air forced convection over not-thin plates with transverse and skewed ribs; data are obtained by means of infrared thermography. Compari¬sons of heat transfer distributions for ribbed plates with data over a flat plate suggest the following observations. The periodic development of the boundary layer is very well displayed by the local distribution of the convective heat transfer coefficient; for both enhanced surfaces, the average Nusselt number shows the same dependence on the Reynolds number than the flat plate; the en¬hancement factor is about 1.4 for both ribbed configura¬tion, without appreciable differences between them.
2009
Proc. of the 27th UIT National Heat Transfer Conference
9788874883127
Heat transfer enhancement; ribs; IR-thermography
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/502579
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