scholarly journals Numerical simulation of single bubble evolution in low gravity with fluctuation

2022 ◽  
Vol 130 ◽  
pp. 105828
Author(s):  
Tianhao Yi ◽  
Xu Chu ◽  
Bin Wang ◽  
Jingyi Wu ◽  
Guang Yang
Keyword(s):  
Numerical Simulation ◽  
Single Bubble ◽  
Low Gravity ◽  
Bubble Evolution

Numerical Simulation on the Motion and Breakup Characteristics of a Single Bubble in a Venturi Channel

2021 ◽  
Vol 60 (40) ◽  
pp. 14613-14624
Author(s):  
Guodong Ding ◽  
Jiaqing Chen ◽  
Zhenlin Li ◽  
Xiaolei Cai
Keyword(s):  
Numerical Simulation ◽  
Single Bubble

scholarly journals Numerical Simulation of Bubble Free Rise after Sudden Contraction Using the Front-Tracking Method

2017 ◽  
Vol 2017 ◽  
pp. 1-8
Author(s):  
Ying Zhang ◽  
Min Lu ◽  
Wenqiang Shang ◽  
Zhen Xia ◽  
Liang Zeng ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Reynolds Number ◽  
Front Tracking ◽  
Single Bubble ◽  
Tracking Method ◽  
Front Tracking Method ◽  
Sudden Contraction ◽  
Eotvos Number

Based on the front-tracking method (FTM), the movement of a single bubble that rose freely in a transverse ridged tube was simulated to analyze the influence of a contractive channel on the movement of bubbles. The influence of a symmetric contractive channel on the shape, speed, and trajectory of the bubbles was analyzed by contrasting the movement with bubbles in a noncontractive channel. As the research indicates, the bubbles became more flat when they move close to the contractive section of the channel, and the bubbles become less flat when passing through the contractive section. This effect becomes more obvious with an increase in the contractive degree of the channel. The symmetric contractive channel can make the bubbles first decelerate and later accelerate, and this effect is deeply affected by Reynolds number (Re) and Eötvös number (Eo).

Numerical Simulation and Experimental Validation of the Dynamics of a Single Bubble During Pool Boiling Under Constant and Time-Varying Reduced Gravity Conditions

2003 ◽  
Author(s):  
H. S. Abarajith ◽  
D. M. Qiu ◽  
V. K. Dhir
Keyword(s):  
Numerical Simulation ◽  
Heated Surface ◽  
Bubble Diameter ◽  
Pool Boiling ◽  
Growth Period ◽  
Single Bubble ◽  
Time Varying ◽  
Reduced Gravity ◽  
System Pressure ◽  
Vapor Liquid

The numerical simulation and experimental validations of the growth and departure of a single bubble on a horizontal heated surface during pool boiling under reduced gravity conditions have been performed here. A finite difference scheme is used to solve the equations governing mass, momentum and energy in the vapor liquid phases. The vapor-liquid interface is captured by level set method, which is modified to include the influence of phase change at the liquid-vapor interface. The effects of reduced gravity conditions, wall superheat and liquid subcooling and system pressure on the bubble diameter and growth period have been studied. The simulations are also carried out under both constant and time-varying gravity conditions to benchmark the solution with the actual experimental conditions that existed during the parabolic flights of KC-135 aircraft. In the experiments, a single vapor bubble was produced on an artificial cavity, 10 μm in diameter microfabricated on the polished silicon wafer, the wafer was heated electrically from the back with miniature strain gage type heating elements in order to control the nucleation superheat. The bubble growth period and the bubble diameter predicted from the numerical simulations have been found to compare well with the data from experiments.

Single bubble breakup in the flow field induced by a horizontal jet—The numerical simulation

2019 ◽  
Vol 14 (5) ◽  
Author(s):  
Baiquan Su ◽  
Jiaying Cao ◽  
Xiongbin Huang ◽  
Ziqi Cai ◽  
Zhengming Gao
Keyword(s):  
Numerical Simulation ◽  
Flow Field ◽  
Single Bubble ◽  
Bubble Breakup

scholarly journals Numerical Simulation of a Single Bubble Passing Through a Circular Pipe with Change of Cross-Section

2006 ◽  
Vol 72 (717) ◽  
pp. 1146-1151
Author(s):  
Atsushi OKAJIMA ◽  
Takumi SAKAMOTO ◽  
Atsushi ENYA ◽  
Tatsumi KANNON
Keyword(s):  
Numerical Simulation ◽  
Cross Section ◽  
Single Bubble ◽  
Circular Pipe

Numerical Simulation on Direct Contact Condensation of Single Bubble in Subcooled Water using MPS method

2010 ◽  
Author(s):  
Wenxi Tian ◽  
Yuki Ishiwatari ◽  
Satoshi Ikejiri ◽  
Yoshiaki Oka ◽  
Liejin Guo ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Direct Contact ◽  
Single Bubble ◽  
Mps Method ◽  
Subcooled Water ◽  
Contact Condensation
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