Simultaneous audio-visual-thermal characterization of transition boiling regime

Sinha, Kumar Nishant Ranjan; Ranjan, Durgesh; Kumar, Naveen; Raza, Md. Qaisar; Raj, Rishi

doi:10.1016/j.expthermflusci.2020.110162

Cited by 9 publications

(2 citation statements)

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“…2017; Sinha et al. 2020) and is a potential cooling method for devices characterized by very large heat release.…”

Section: Introductionmentioning

confidence: 99%

“…In 1981, a boiling phenomenon called microbubble emission boiling (MEB) was observed in the transition boiling region under highly subcooled conditions by Inada et al (1981). MEB has been proved to be able to achieve a heat flux several or even ten times higher than CHF (Suzuki, Saitoh & Matsumoto 2002;Ueno, Hattori & Hosoya 2011;Ando et al 2016;Inada et al 2016;Tang et al 2017;Sinha et al 2020) and is a potential cooling method for devices characterized by very large heat release.…”

Section: Introductionmentioning

confidence: 99%

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Bubble-induced oscillating flow in microbubble emission boiling under highly subcooled conditions

Tang

et al. 2023

J. Fluid Mech.

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Microbubble emission boiling (MEB), a phenomenon that occurs under highly subcooled boiling conditions, can achieve a high heat flux beyond critical heat flux. MEB has been observed to differ from nucleate boiling and is always accompanied by the emission of microbubbles from an oscillating bubble. The heat transfer mechanism of MEB differs from that of nucleate boiling and remains elusive. In this study, we measure the behaviour of a vapour bubble and its induced liquid flow simultaneously during subcooled boiling using the high-speed two-phase particle image velocimetry method. Different from nucleate boiling, we observe a rapid oscillating flow outside the bubble that constantly attaches on the heating surface in MEB. The spatially and temporally averaged velocity magnitude values under this oscillating flow, and their dependency on liquid subcooling and heat flux, are quantified. Then we derive a scaling law for the heat transfer of MEB as a function of Péclet and Jacob numbers. With such correlations, we suggest that the oscillating flow induced by bubble oscillations is important to MEB, thus elucidating a different heat transport process from nucleate boiling.

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“…2017; Sinha et al. 2020) and is a potential cooling method for devices characterized by very large heat release.…”

Section: Introductionmentioning

confidence: 99%