Local convective heat transfer from an array of wall-mounted cubes

• Published in: International journal of heat and mass transfer Vol. 41; no. 2; pp. 335 - 346
• Main Authors: Meinders, E.R., Van Der Meer, T.H., Hanjalic, K.
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 1998; Elsevier
• Subjects: Convection and heat transfer; Exact sciences and technology; Flow visualization; Fluid dynamics; Fundamental areas of phenomenology (including applications); Heat flux; Heat transfer coefficients; Physics; Temperature distribution; Thermography (temperature measurement); Turbulent flows, convection, and heat transfer; Wind tunnels; Forced convection; Cooling; Vertical pipe; Printed circuit board; Surface temperature; Heat transfer coefficient; Experimental study; Temperature measurement; Electronic component; Flow visualization; Arrays; Heat transfer; Thermography
• ISSN: 0017-9310; 1879-2189
• DOI: 10.1016/S0017-9310(97)00148-8

The paper presents some results of the experimental investigation of the local convective heat transfer from a wall-mounted single array of cubical protrusions along a wall of a wind tunnel. The local convective heat transfer was determined from the surface temperature distribution of the internally heated cubical elements, measured with infrared and liquid crystal thermography, and from the local surface heat flux. In addition, smoke and surface oil-film visualizations were performed to characterize the macroscopic flow-field which provided a basis for a qualitative interpretation of the heat transfer coefficient distributions. The results showed a high non-uniformity of the local convective heat transfer over the surfaces of the individual elements.