@inproceedings{2b4205925a6f4ce693a604882bc978cc,
title = "NUMERICAL SIMULATION OF A COMPRESSIBLE AIR BUBBLE RISING IN WATER WITH VARIABLE THERMOPHYSICAL PROPERTIES",
abstract = "A numerical study of a compressible air bubble rising in water with variable thermophysical properties is conducted. We use the coupled level set and volume of fluid method to track the interface. Empirical correlations in terms of temperature for thermophysical properties and equation of state for air are considered in the simulations. We simulate a compressible 3D static air bubble in water for the first time. The volume change of the bubble and the pressure difference between the inside and outside of the static bubble agree well with the theoretical solutions. The heat transfer could increase the spurious currents. For a 3D bubble rising in water, different paths are observed for two cases with different temperature settings. The mechanisms underlying the path instability are elucidated by analyzing the vortex dynamics and shape deformation. We observe the hairpin vortex with the 4R mode during the zigzag motion. The relations among the path instability, vortex shedding and aspect ratio are investigated quantitatively.",
keywords = "CLSVOF, bubble dynamics, compressibility effect, variable thermophysical properties of water",
author = "Yuanwei Cao and Canals, \{I{\'n}es Mateos\} and Rafael Mac{\'I}an-Juan",
note = "Publisher Copyright: {\textcopyright} ATH 2020 - International Topical Meeting on Advances in Thermal Hydraulics.All rights reserved.; 2020 International Topical Meeting on Advances in Thermal Hydraulics, ATH 2020 ; Conference date: 20-10-2020 Through 23-10-2020",
year = "2020",
language = "English",
series = "ATH 2020 - International Topical Meeting on Advances in Thermal Hydraulics",
publisher = "American Nuclear Society",
pages = "979--992",
booktitle = "ATH 2020 - International Topical Meeting on Advances in Thermal Hydraulics",
}