Laws of vapor bubble growth in the superheated liquid volume (thermal growth scheme)

2014 ◽  
Vol 52 (4) ◽  
pp. 588-602 ◽  
Author(s):  
A. A. Avdeev
2005 ◽  
Vol 41 (10) ◽  
pp. 855-863 ◽  
Author(s):  
Alexandr A. Avdeev ◽  
Yuri B. Zudin

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
A. A. Chernov ◽  
A. A. Pil’nik ◽  
I. V. Vladyko ◽  
S. I. Lezhnin

Abstract This paper presents a mathematical model of the vapor bubble growth in an initially uniformly superheated liquid. This model takes into account simultaneously the dynamic and thermal effects and includes the well-known classical equations: the Rayleigh equation and the heat conductivity equation, written with consideration of specifics associated with the process of liquid evaporation. We have obtained a semi-analytical solution to the problem, which consists in reducing the initial boundary value problem with a moving boundary to a system of ordinary differential equations of the first order, valid in a wide range of operating parameters of the process at all its stages: from inertial to thermal, including the transitional one. It is shown that at large times this solution is consistent with the known solutions of other authors obtained in the framework of the energy thermal model, in particular, for the high Jacob numbers, it is consistent with the Plesset–Zwick solution.


2004 ◽  
Vol 16 (3) ◽  
pp. 809-823 ◽  
Author(s):  
O. E. Ivashnyov ◽  
N. N. Smirnov

2020 ◽  
Vol 65 (11) ◽  
pp. 405-408
Author(s):  
A. A. Chernov ◽  
M. A. Guzev ◽  
A. A. Pil’nik ◽  
I. V. Vladyko ◽  
V. M. Chudnovsky

2021 ◽  
Vol 2039 (1) ◽  
pp. 012035
Author(s):  
I V Vladyko ◽  
I P Malakhov ◽  
A S Surtaev ◽  
A A Pil’nik ◽  
A A Chernov

Abstract In this paper, the results of numerical calculations of a vapor bubble growth in superheated water at different pressures are presented. Modeling is based on a previously developed by the authors semi-analytical solution. The results are verified by experimental data obtained at atmospheric and subatmospheric pressures. The presented simulation results and experimental data are in good agreement. The advantage of the solution over the earlier ones (based on the thermal growth model) is shown.


Author(s):  
Abhijit Mukherjee ◽  
Satish G. Kandlikar

The present study is performed to numerically analyze growth of a vapor bubble during flow of water in a microchannel. The complete Navier-Stokes equations along with continuity and energy equations are solved using the SIMPLER method. The liquid vapor interface is captured using the level set technique. The microchannel is 200 microns in square cross-section and the bubble is placed at the center of the channel with superheated liquid around it. The results show steady initial bubble growth followed by a rapid axial expansion after the bubble fills the channel with a thin liquid film around it. The bubble then rapidly turns into a plug and fills up the entire channel. A trapped liquid layer is observed between the bubble and the channel as the plug elongates. The bubble growth rate increased with the incoming liquid superheat and formation of vapor patch at the walls is found to be dependent on the bubble growth rate. The upstream interface of the bubble is found to exhibit both forward and reverse movement during bubble growth. Results show little effect of gravity on the bubble growth under the specified conditions. The bubble growth features obtained from numerical results are found to be qualitatively similar to experimental observations.


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