Experimental and numerical analysis of heat transfer within cavity working under highly non-stationary flow conditions

Sebastian Rulik, Włodzimierz Wróblewski, Mirosław Majkut, Michał Strozik and Krzysztof Rusin

Energy, 2020, vol. 190, issue C

Abstract: Cavities and gaps are a common design element of a lot of types of machinery and equipment. The fluid flow over a cavity may generate acoustic waves, which may have both negative and positive implications. This paper is focused on the possibility of improving the heat transfer conditions using the phenomenon of the acoustic wave generation. The operating conditions of a system including an acoustic generator are analysed both numerically and experimentally. A measuring stand and the applied measuring techniques are presented. The sound pressure level characteristic is determined and then compared with the results of a numerical simulation performed for different models. Additionally, the Schlieren technique is used to determine flow structure within the cavity.

Keywords: Aeroacoustic; Cavity noise; Cavity cooling; Sound wave cooling; Noise modelling; Sound wave modelling; Flow over a cavity; Unsteady jet cooling; Schlieren technique (search for similar items in EconPapers)
Date: 2020
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Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:190:y:2020:i:c:s036054421931998x

DOI: 10.1016/j.energy.2019.116303

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