Study on the transient characteristics of pulsation bubble near a free surface based on finite volume method and front tracking method

2020 ◽  
Vol 32 (5) ◽  
pp. 052107 ◽  
Author(s):  
L. T. Liu ◽  
X. B. Chen ◽  
W. Q. Zhang ◽  
A.-M. Zhang
Keyword(s):  
Free Surface ◽  
Finite Volume Method ◽  
Finite Volume ◽  
Front Tracking ◽  
Transient Characteristics ◽  
Tracking Method ◽  
Front Tracking Method ◽  
Volume Method

scholarly journals SIMULASI NUMERIK FENOMENA SINGLE DROPLET MENGGUNAKAN METODE VOLUME HINGGA DAN FRONT-TRACKING

POROS ◽  
2018 ◽  
Vol 15 (2) ◽  
pp. 84
Author(s):  
Dondi Kurniawan ◽  
Eko Budiana ◽  
Deendarlianto Deendarlianto ◽  
Indarto Indarto
Keyword(s):  
Finite Volume Method ◽  
Finite Volume ◽  
Stokes Equations ◽  
Initial Step ◽  
Front Tracking ◽  
Navier Stokes ◽  
Single Droplet ◽  
Navier Stokes Equation ◽  
Front Tracking Method ◽  
Volume Method

Abstract: A numerical simulation of single droplet phenomena is conducted using a finite volume method. Interface between different phases is tracked by using a front-tracking method. Governing equations used in present paper consist of the continuity equation, the Navier-Stokes equation and the front-tracking equation. The unsteady Navier-Stokes equations are solved implicitly using the finite volume method on staggered mesh. The interfacial term such as surface tension is negligible and the viscosity of the fluid is considered equal. The completion of pressure term is solved by Successive Over-Relaxation (SOR) method. The validation of present paper result is conducted by comparing to Tryggvasson (2012) result using explicit scheme. The advantage of this research is using implicit scheme that is unconditional stable. This research is the initial step to model a single droplet impact on solid surface. In this research will be discussed representation of interface and dynamics of interface reconstruction. Finite volume and front-tracking methods are expected to perform the problem well for more complete case. 

Analysis of dynamic characteristics of bubble rise under a free surface

2020 ◽  
Vol 98 (11) ◽  
pp. 981-992
Author(s):  
Ying Zhang ◽  
Qiang Liu ◽  
Wenbin Li ◽  
Xiaolong Lian ◽  
Jinglun Li ◽  
...  
Keyword(s):  
Free Surface ◽  
Immersed Boundary Method ◽  
Weber Number ◽  
Front Tracking ◽  
Terminal Velocity ◽  
Immersed Boundary ◽  
Tracking Method ◽  
Free Interface ◽  
Front Tracking Method ◽  
Moving Interface

The rising process of a bubble occurs in several natural and industrial apparatuses. This process is computationally studied using the front tracking method for a moving interface whose surface properties are solved in terms of an immersed-boundary method. The results show that the free interface does not influence the bubble before the centroid velocity of the bubble reaches the terminal velocity, which reaches a stable value or fluctuates at it, with the distance h (between the centroid of the bubble and the free surface) reaching a certain value. When the Reynolds number increases, the time to reach terminal velocity will decrease, and the influence of the viscous factor on the terminal velocity is also weakened. The dramatic interaction between a bubble and free surface is beneficial to accelerate film draining out. It is also shown that the shape of the bubble gradually becomes an ellipse as the Weber number (We) decreases, and it is beneficial to reduce the resistance of the bubble. The free surface could accelerate the bubble breaking at high We values.

A Moving-Grid Finite-Volume Method for Free Surface Flows

2014 ◽  
Vol 2014.27 (0) ◽  
pp. 729-730
Author(s):  
Sadanori Ishihara ◽  
Kenichi Matsuno ◽  
Masashi Yakmakawa
Keyword(s):  
Free Surface ◽  
Finite Volume Method ◽  
Finite Volume ◽  
Free Surface Flows ◽  
Moving Grid ◽  
Surface Flows ◽  
Volume Method

A multiscale front tracking method for compressible free surface flows

2007 ◽  
Vol 62 (13) ◽  
pp. 3538-3548 ◽  
Author(s):  
Zhiliang Xu ◽  
James Glimm ◽  
Yongmin Zhang ◽  
Xinfeng Liu
Keyword(s):  
Free Surface ◽  
Front Tracking ◽  
Free Surface Flows ◽  
Surface Flows ◽  
Tracking Method ◽  
Front Tracking Method
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