scholarly journals Numerical simulation of a confined cavitating gas bubble driven by ultrasound

2021 ◽  
Vol 33 (12) ◽  
pp. 122114
Author(s):  
Jacqueline Mifsud ◽  
Duncan A. Lockerby ◽  
Yongmann M. Chung ◽  
Gordon Jones
Keyword(s):  
Numerical Simulation ◽  
Gas Bubble

Direct numerical simulation of strong compression of the axisymmetric gas cavity in a liquid

2007 ◽  
Vol 5 ◽  
pp. 73-78
Author(s):  
A.A. Aganin ◽  
T.F. Khalitova ◽  
N.A. Khismatullina
Keyword(s):  
Numerical Simulation ◽  
Direct Numerical Simulation ◽  
Gas Bubble ◽  
Godunov Scheme ◽  
Smooth Solutions ◽  
Order Accuracy ◽  
First Order ◽  
Simulation Based ◽  
Strong Compression ◽  
Gas Cavity

A technique for computing strong compression of an axisymmetric gas bubble in a liquid by direct numerical simulation based on the equations of fluid dynamics is presented. This technique uses a scheme of the second-order accuracy in space and time for smooth solutions. Some results of numerical investigation of efficiency of this technique are given. It is established that this technique is much more effective than the classical first order accurate Godunov scheme widely known in the literature.

Numerical simulation of gas bubble motion in a flow-through resonator

2013 ◽  
Vol 59 (4) ◽  
pp. 393-398 ◽  
Author(s):  
V. A. Tikhonov ◽  
I. N. Didenkulov ◽  
N. V. Pronchatov-Rubtsov
Keyword(s):  
Numerical Simulation ◽  
Gas Bubble ◽  
Bubble Motion ◽  
Flow Through

scholarly journals Numerical simulation of gas-bubble formation through two submerged orifices

Sadhana ◽  
2018 ◽  
Vol 43 (11) ◽  
Author(s):  
V K Prasad ◽  
D Chatterjee ◽  
S P Singh
Keyword(s):  
Numerical Simulation ◽  
Bubble Formation ◽  
Gas Bubble

Propagation of Underwater Shock Wave and Gas Bubble Behavior Induced by Electrical Discharge in Water

2014 ◽  
Vol 566 ◽  
pp. 403-408
Author(s):  
Hideki Hamashima ◽  
Seisaku Iwasa ◽  
Hironori Maehara ◽  
Shigeru Itoh ◽  
Kazuyuki Hokamoto
Keyword(s):  
Numerical Simulation ◽  
Shock Wave ◽  
Electrical Discharge ◽  
High Speed ◽  
Optical Observation ◽  
Gas Bubble ◽  
Bubble Behavior ◽  
Underwater Shock Wave ◽  
Whole Process ◽  
Underwater Shock

The basic behavior during underwater electrical discharge up to 10 kJ stored energy is investigated through both numerical analysis and optical-observation experiments. Since the authors have been investigating the use of underwater exploding phenomena for food processing and other applications, it is necessary to know the whole process which may affect the quality of the samples recovered. In the present investigation, the propagation of underwater shock wave was measured using a high-speed camera and compared with the numerically simulated results using LS-DYNA. Also, the motion of gas bubble, which is induced quite after the propagation of the shock wave, was measured and compared with the numerical simulation using the same code. The pressure of the bubble is not such high as the shock wave, but it is known that the impulse is not possible to be ignored due to its relatively long duration of the pressurization. Through a series of optical-observation experiments, it is confirmed that the numerical simulation is potentially possible to predict the whole phenomena for processing foods and other materials.

Numerical Simulation of the Evolution of a Gas Bubble in a Liquid Near a Wall

2018 ◽  
Vol 10 (1) ◽  
pp. 89-98 ◽  
Author(s):  
A. A. Aganin ◽  
L. A. Kosolapova ◽  
V. G. Malakhov
Keyword(s):  
Numerical Simulation ◽  
Gas Bubble

Numerical Simulation of Effect of X-Shape Submerged Nozzle on Flow of Molten Steel in Mold

2012 ◽  
Vol 538-541 ◽  
pp. 490-493
Author(s):  
Xiao Chao Cui ◽  
Yan Juan Jin ◽  
Yan Xia Chen
Keyword(s):  
Numerical Simulation ◽  
Viscous Fluid ◽  
Fluid Mechanics ◽  
Molten Steel ◽  
Bottom Surface ◽  
Gas Bubble ◽  
Submerged Nozzle ◽  
Numeric Simulation

The numeric simulation of effect of X-shape submerged nozzle on flow of molten steel in a mold for 160mm×160mm concasting billet has been carried out by viscous fluid mechanics theory and CFD software Fluent. It was verified that during pouring with X-shape submerged nozzle, the vortex molten steel entering into mold by guide of vortex guidance channel which was formed with top and bottom surface of two semioval flow guidance plate and invert taper pipe to availably reduce impact depth, promote inclusion and gas bubble aggregating and floating off, and improve concasting efficiency.

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