Numerical investigation of the natural convection film boiling around elliptical tubes

Abstract : In this paper, numerical analysis of the pool boiling heat transfer on isothermal elliptical tubes with different aspect ratios at saturated condition is presented. Bubbles' tip velocities and positions, interfacial topological changes as well as convection heat fluxes of five different cases are presented for wide ranges of wall temperatures. Both time-averaged and dynamic behaviors of flow physics and heat transfer are investigated. The departure time of the first bubble, its time-dependent and averaged velocities, and heat fluxes are obtained. Finally, a novel correlation is presented for the Nusselt number that accounts for the elliptical tubes' diameter and aspect ratio.
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Article dans une revue
Numerical Heat Transfer, Part A Applications, Taylor & Francis, 2016, 70 (7), pp.707--722. 〈10.1080/10407782.2016.1214484〉
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Soumis le : jeudi 5 octobre 2017 - 15:35:52
Dernière modification le : mardi 5 juin 2018 - 10:14:20

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R. Sadeghi, M. S. Shadloo, K. Hooman. Numerical investigation of the natural convection film boiling around elliptical tubes. Numerical Heat Transfer, Part A Applications, Taylor & Francis, 2016, 70 (7), pp.707--722. 〈10.1080/10407782.2016.1214484〉. 〈hal-01611209〉

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