年間 4 号発行
ISSN 印刷: 1065-3090
ISSN オンライン: 1940-4336
Indexed in
INVESTIGATION OF NATURAL CONVECTION IN VERTICAL CHANNELS BY SCHLIEREN AND HOLOGRAPHIC INTERFEROMETRY
要約
Heat transfer phenomena, which frequently involve convection, are usually described through a connective heat-transfer coefficient h. Precise measurement of h is difficult, since calculation requires knowledge of the temperature gradient between the solid surface and the fluid, measured, possibly, without disturbing the thermal layer. Optical techniques are powerful tools in experimental analysis because of their non-disturbing nature. In this paper, natural convection heat transfer in vertical channels is investigated by applying two different optical techniques, namely, schlieren and holographic interferometry. Experiments were conducted at DITEC, University of Geneva (Italy) and at the Energetic Department of the University of L 'Aquila (Italy) on the same test section. The obtained results are discussed and compared.
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Blaszczuk Artur, Experimental investigation of natural convection inside a upper part of vertical converging air channel using the Schlieren technique, Experimental Thermal and Fluid Science, 50, 2013. Crossref
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Belashov Andrey V., Zhikhoreva Anna A., Semenova Irina V., Recording of Long Low-Amplitude Bulk Elastic Waves in Transparent Solid Waveguides by Digital and Classical Holography, Applied Sciences, 12, 3, 2022. Crossref