Temperature Fluctuation under Bubbles of Pool Boiling at decompression.

Numerical Study of Spatial Surface Temperature and Nucleation Site Density At High Heat Flux Pool Boiling

A numerical study of nucleation site density was included into the macrolayer model of Maruyama et al.. The results indicate that nucleate boiling curve and critical heat flux point move to the lower superheat region with increasing surface roughness, which is in a good agreement with Bereson ’s experiment. Furthermore, a three dimensional numerical method using finite control volume method and...

Secondary pool boiling effects

Analysis of pool boiling heat transfer: effect of bubbles sliding on the heating surface

Pool boiling on surfaces where sliding bubble mechanism plays an important role has been studied. The heat transfer phenomenon for such cases has been analysed. The model considers different mechanisms such as latent heat transfer due to microlayer evaporation, transient conduction due to thermal boundary layer reformation, natural convection and heat transfer due to the sliding bubbles. Both m...

Effect of Dynamic Contact Angle on Single Bubbles during Nucleate Pool Boiling

Nucleate pool boiling at low heat flux is typically characterized by cyclic growth and departure of single vapor bubbles from the heated wall. It has been experimentally observed that the contact angle at the bubble base varies during the ebullition cycle. In the present numerical study, dynamic advancing and receding contact angles obtained from experimental observations are specified at the b...

Numerical study of single bubbles with dynamic contact angle during nucleate pool boiling

Nucleate pool boiling is typically characterized by cyclic growth and departure of vapor bubbles from a heated wall. It has been experimentally observed that the contact angle at the bubble base varies during the ebullition cycle. In the present numerical study, a static contact angle model and dynamic contact angle models based on the contact line velocity and the sign of the contact line velo...