Some problems in nucleate flow boiling

Geld, van der Cwm Cees; Baltis, Chm Coen; Priems, Gjm Giel; Baki, Touhami

doi:10.1051/matecconf/20141801003

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2017

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“…They noted that the sliding of the bubble improves the heat transfer. Van der Geld et al (2014) presented measurements of the growth of vapor bubble and its detachment for some orientation, and compared with 2D numerical simulations. An analysis of the forces acting on the bubble during its sliding was examined.…”

Section: Introductionmentioning

confidence: 99%

Wall Orientation Effect on the Detachment of a Vapor Bubble

Baki¹,

Sahel²,

Guessab³

2017

Frontiers in Heat and Mass Transfer

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Boiling is influenced by a large number of parameters; the angle of orientation constitutes one of these parameters which have a positive impact on the heat transfer. The dynamic of the bubble plays a significant role in the improvement of heat transfer during boiling. For this reason, we are located on the bubble scale and we simulated the detachment of vapor bubble in the liquid water on a heated surface, when the angle of orientation varies from 0 to 180°. We followed the evolution of the sliding of the bubble; it appears that the thermal boundary layer is disturbed and that the heat transfer coefficient reached major proportions and the sliding velocity of the bubble depends on the orientation of the wall.

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Section: Introductionmentioning

confidence: 99%