The main purpose of this paper is to numerically investigate the contact angle of a bubble on a solid surface and the effect of bubble curvature on the surface tension. A computer code based on Molecular Dynamics method is developed. The code carries out a series of simulations to generate bubbles between two planar solid surfaces for different wettabilities. In our simulation, the surface wettability affects the bubble contact angle and curvature. The pair potential for the liquid–liquid and liquid-solid interaction is considered using Lennard-Jones model. Density profiles are locally calculated. Furthermore, surface tension is computed using Young-Laplace equation. It is observed that the gas pressure is independent of the bubble radius. However, the liquid pressure becomes more negative as the radius decreases. In addition, the amount of surface tension decreases by decrease of the radius.
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ASME 2010 10th Biennial Conference on Engineering Systems Design and Analysis
July 12–14, 2010
Istanbul, Turkey
Conference Sponsors:
- International
ISBN:
978-0-7918-4918-7
PROCEEDINGS PAPER
Investigation of Bubble Nucleation on Platinum Solid Surface Using Molecular Dynamics (MD) Simulation Available to Purchase
S. M. Mirnouri Langroudi,
S. M. Mirnouri Langroudi
K.N. Toosi University of Technology, Tehran, Tehran, Iran
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M. Ghasemi,
M. Ghasemi
K.N. Toosi University of Technology, Tehran, Tehran, Iran
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A. Shahabi,
A. Shahabi
K.N. Toosi University of Technology, Tehran, Tehran, Iran
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H. Rezaei Nejad
H. Rezaei Nejad
K.N. Toosi University of Technology, Tehran, Tehran, Iran
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S. M. Mirnouri Langroudi
K.N. Toosi University of Technology, Tehran, Tehran, Iran
M. Ghasemi
K.N. Toosi University of Technology, Tehran, Tehran, Iran
A. Shahabi
K.N. Toosi University of Technology, Tehran, Tehran, Iran
H. Rezaei Nejad
K.N. Toosi University of Technology, Tehran, Tehran, Iran
Paper No:
ESDA2010-25114, pp. 247-252; 6 pages
Published Online:
December 28, 2010
Citation
Mirnouri Langroudi, SM, Ghasemi, M, Shahabi, A, & Rezaei Nejad, H. "Investigation of Bubble Nucleation on Platinum Solid Surface Using Molecular Dynamics (MD) Simulation." Proceedings of the ASME 2010 10th Biennial Conference on Engineering Systems Design and Analysis. ASME 2010 10th Biennial Conference on Engineering Systems Design and Analysis, Volume 4. Istanbul, Turkey. July 12–14, 2010. pp. 247-252. ASME. https://doi.org/10.1115/ESDA2010-25114
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