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Title: Comparison of FLACS and BASiL model for Ro-Pax ferry LNG bunkering leak analysis
Authors: Lim, Boon How
Ng, Eddie Yin Kwee
Keywords: Engineering::Mechanical engineering
Issue Date: 2022
Source: Lim, B. H. & Ng, E. Y. K. (2022). Comparison of FLACS and BASiL model for Ro-Pax ferry LNG bunkering leak analysis. Fluids, 7(8), 7080272-.
Project: #001799-00001 
Journal: Fluids 
Abstract: Performing liquefied natural gas (LNG) bunkering involves the risk of accidental leakage. When released from containment, LNG rapidly vaporizes into flammable natural gas and could lead to flash fire and explosion. Hence, LNG bunkering needs to take place in an area without an ignition source called a safety zone. This study compares the safety zone estimated by the Bunkering Area Safety Information for LNG (BASiL) model with that of the computational fluid dynamic (CFD) software FLACS, for Ro-Pax ferry bunkering. Horizontal leaks covering different wind speeds in eight wind directions were compared between the two models. Additionally, a grid refinement study was performed systematically to quantify the discretization error uncertainty in the CFD. Of 24 leak cases, FLACS and the BASiL model results agreed on 18 cases. In three cases validation was inconclusive due to the CFD error uncertainty. The BASiL model underestimated the safety zone distance in three cases compared with FLACS. Future work would be to perform a higher grid refinement study to confirm inconclusive comparison and examine ways to reduce gas dispersion spread for the worst result.
ISSN: 2311-5521
DOI: 10.3390/fluids7080272
Schools: School of Mechanical and Aerospace Engineering 
Organisations: Sembcorp Marine
Rights: © 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// 4.0/).
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MAE Journal Articles

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