Electrohydrodynamic Effects on Single Bubble Growth and Departure under Microgravity Conditions: a Numerical Investigation

2019 ◽  
Vol 31 (6) ◽  
pp. 805-819
Author(s):  
Vishwa Krishna Rajan ◽  
Vasudevan Chandramouli ◽  
Seetharaman Seshadri ◽  
Venkatesan Muniyandi
Keyword(s):  
Numerical Investigation ◽  
Bubble Growth ◽  
Single Bubble ◽  
Microgravity Conditions ◽  
Bubble Growth And Departure

A Numerical Study of the Effect of Contact Angle on the Dynamics of a Single Bubble During Pool Boiling

2002 ◽  
Author(s):  
H. S. Abarajith ◽  
V. K. Dhir
Keyword(s):  
Heat Flux ◽  
Contact Angle ◽  
Bubble Growth ◽  
Numerical Study ◽  
Heated Surface ◽  
Pool Boiling ◽  
Growth Period ◽  
Single Bubble ◽  
Liquid Phases ◽  
Bubble Growth And Departure

The effect of contact angle on the growth and departure of a single bubble on a horizontal heated surface during pool boiling under normal gravity conditions has been investigated using numerical simulations. The contact angle is varied by changing the Hamaker constant that defines the long-range forces. A finite difference scheme is used to solve the equations governing mass, momentum and energy in the vapor and liquid phases. The vapor-liquid interface is captured by the Level Set method, which is modified to include the influence of phase change at the liquid-vapor interface. The contact angle is varied from 1° to 90° and its effect on the bubble departure diameter and the bubble growth period are studied. Both water and PF5060 are used as test liquids. The contact angle is kept constant throughout the bubble growth and departure process. The effect of contact angle on the parameters like thermal boundary layer thickness, wall heat flux and heat flux from the microlayer under various conditions of superheats and subcoolings is also studied.

scholarly journals Computational Fluid Dynamic Simulation of Single Bubble Growth under High-Pressure Pool Boiling Conditions

2016 ◽  
Vol 48 (4) ◽  
pp. 859-869 ◽  
Author(s):  
Janani Murallidharan ◽  
Giovanni Giustini ◽  
Yohei Sato ◽  
Bojan Ničeno ◽  
Vittorio Badalassi ◽  
...  
Keyword(s):  
High Pressure ◽  
Dynamic Simulation ◽  
Computational Fluid Dynamic ◽  
Bubble Growth ◽  
Fluid Dynamic ◽  
Pool Boiling ◽  
Computational Fluid Dynamic Simulation ◽  
Single Bubble

Numerical investigation of the bubble growth in horizontal rectangular microchannels

2017 ◽  
Vol 71 (12) ◽  
pp. 1175-1188 ◽  
Author(s):  
Yang Luo ◽  
Jingzhi Zhang ◽  
Wei Li ◽  
Ekaterina Sokolova ◽  
Yourong Li ◽  
...  
Keyword(s):  
Numerical Investigation ◽  
Bubble Growth ◽  
Rectangular Microchannels
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