WALL ORIENTATION EFFECT ON THE DETACHMENT OF A VAPOR BUBBLE | Zendy

Touhami Baki | Zendy; Djamel Sahel | Zendy; Ahmed Guessab | Zendy

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WALL ORIENTATION EFFECT ON THE DETACHMENT OF A VAPOR BUBBLE

Author(s) -

Touhami Baki,

Djamel Sahel,

Ahmed Guessab

Publication year - 2017

Publication title -

frontiers in heat and mass transfer

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.404

H-Index - 18

ISSN - 2151-8629

DOI - 10.5098/hmt.9.14

Subject(s) - thermal fluids , frontier , bubble , thermal , materials science , orientation (vector space) , aerospace engineering , engineering physics , mechanics , engineering , political science , thermodynamics , physics , thermal resistance , law , geometry , mathematics

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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