Model Evaluation Report for LNG Dispersion on Fire Dynamics Simulator Version 6.5.3

Technical Report · Mon Oct 01 04:00:00 EDT 2018

DOI:https://doi.org/10.2172/1761343· OSTI ID:1761343

Luketa, Anay ^[1]; Romero, Brian ^[1]

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1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

This report is an assessment of the computational fluid dynamics (CFD) code Fire Dynamics Simulator (FDS), version 6.5.3, using the Model Evaluation Protocol (MEP) for Liquefied Natural Gas (LNG). The MEP consists of model validation and a scientific assessment that encompasses model information and model verification activities. Model validation entails comparison against various field and wind-tunnel trials for LNG and other dense gases with and without obstructions. The results indicate that FDS is generally over-predictive for most of the field scale dense gas releases and cases involving obstructions without requiring a safety factor of 2, however, since there are uncertainties in extrapolating to accident scales a safety factor of 2 (1/2 LFL criteria) may be appropriate. The results of this scientific assessment and prior verification efforts demonstrate the soundness of the numerical techniques and robustness of FDS. The validation results indicate that FDS is suitable for modeling dense gas dispersion with and without obstructions.

• Research Organization: Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
• Sponsoring Organization: USDOE Office of Fossil Energy (FE), Oil and Natural Gas (FE-30)
• DOE Contract Number: AC04-94AL85000; NA0003525
• OSTI ID: 1761343
• Report Number(s): SAND--2018-12248; 670923
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
42 ENGINEERING