Uncertainties in Modeling LNG Vapor Dispersion with CFD Codes

Source: AIChE
  • Type:
    Conference Presentation
  • Conference Type:
    AIChE Spring Meeting and Global Congress on Process Safety
  • Presentation Date:
    March 23, 2010
  • Duration:
    30 minutes
  • Skill Level:
  • PDHs:

Share This Post:

Computational fluid dynamics (CFD) models have been widely proposed and developed to predict LNG vapor dispersion behavior and to determine safe separation distances around LNG production storage and transportation facilities. This is largely due to the ability of CFD codes to describe fully the relevant physical processes in complex geometrical circumstances. However, like other consequence models, CFD models for LNG vapor dispersion entail a number of simplifying assumptions, approximations, empirical relations and constants. Therefore uncertainties in predicted results are inevitable. These uncertainties are generally associated with either the numerical solution methods or an incomplete modeling of the physics involved. In this paper, a review of factors which can impact the results of CFD modeling is provided. A sensitivity analysis was conducted to estimate the scale of uncertainties for key parameters. In addition, some recommended methods are introduced to control or reduce the magnitude of uncertainties to a prescribed confidence level.

This recording is FREE to members of the Fuels and Petrochemicals Division of AIChE. AIChE members may join the Division for only $10. Join F&PD now and return to this page with your new log-in and you will receive this presentation for FREE.
F&PD Members: Simply click on “click here to buy this archived webcast ” below and your ‘0’ price will appear in your shopping cart.
Once the content has been viewed and you have attested to it, you will be able to download and print a certificate for PDH credits. If you have already viewed this content, please click here to login.



Do you already own this?



AIChE Member Credits 0.5
AIChE Members $15.00
AIChE Fuels and Petrochemicals Division Members Free
AIChE Undergraduate Student Members Free
AIChE Graduate Student Members Free
Non-Members $25.00