CFD modelling of the isobaric evaporation of cryogenic liquids in storage tanks
File(s)
Author(s)
Huerta, Felipe
Vesovic, Velisa
Type
Journal Article
Abstract
A new CFD model relevant to isobaric cryogen evaporation and weathering in storage tanks has been developed. It treats the heat influx from the surroundings into the vapour and liquid phases separately and allows for heat transfer between the two phases. The model accurately predicts the dynamics of the vapour flow and the vapour to liquid heat transfer. It provides well-resolved velocity and temperature profiles in the vapour phase, as well as evaporation and boil-off gas rates. It demonstrates that the main flow pattern is that the vapour circulates upwards close to the tank wall, then radially along the roof towards the tank axis, where the flow is partitioned; between a fluid that leaves the tank, and a fluid that recirculates back towards the vapour bulk. The results of simulations, carried out in different sized tanks with different initial amounts of cryogen, were compared with the results of the Huerta and Vesovic non-equilibrium model. The results indicate that, for the purposes of modelling heat transfer between the phases, steady-state vapour temperature and boil-off gas rate, the complex flow established in the vapour phase can be adequately modelled by the effective advective, upward flow from the interface.
Date Issued
2021-09
Date Acceptance
2021-04-26
Citation
International Journal of Heat and Mass Transfer, 2021, 176, pp.1-13
ISSN
0017-9310
Publisher
Elsevier BV
Start Page
1
End Page
13
Journal / Book Title
International Journal of Heat and Mass Transfer
Volume
176
Copyright Statement
© 2021 Elsevier Ltd. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence http://creativecommons.org/licenses/by-nc-nd/4.0/
Identifier
https://www.sciencedirect.com/science/article/pii/S0017931021005226?via%3Dihub
Subjects
01 Mathematical Sciences
02 Physical Sciences
09 Engineering
Mechanical Engineering & Transports
Publication Status
Published
Article Number
121419
Date Publish Online
2021-05-13