Analysis of Wind Effects on a Multi-field LNG Ground Flare

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Title Analysis of Wind Effects on a Multi-field LNG Ground Flare
Creator Smith, Joseph D.
Contributor Jackson, Robert; Suo-Anttila, Ahti; Kefley, Kerby; Wade, Doug; Allen, Doug; and Smith, Scot
Date 2013-09-25
Spatial Coverage Kauai, Hawaii
Subject AFRC 2013 Industrial Combustion Symposium
Description Paper from the AFRC 2013 conference titled Analysis of Wind Effects on a Multi-field LNG Ground Flare by Joseph D. Smith
Abstract A Multi-Point Ground Flare (MPGF) was modeled at full flare gas flow conditions with an 8m/s corner wind. This MPGF consists of three flare fields with 469 flare tips in each field. The flare tips in the middle of the field are air-assisted tips. This entire MPGF system is capable of flaring in excess of 6x106 kg/hr of vented gas. The detailed computational fluid dynamics (CFD) model of this MPGF was developed using a proprietary flare modeling tool called C3d. Wind can have a detrimental effect on flows inside ground flares with vortices being particularly troublesome in some cases. The CFD simulation using C3d predicted that vortices did form, but these vortices were relatively weak due to sufficient influx of air through the porous fence. The MPGF generally had good performance for this wind condition at maximum flare gas flows. There was some concern as the air-assisted flare tips appeared to have insufficient blower air supply causing taller than desired flame heights. The air-assisted flare tips appeared to use up air causing the tips in the region downwind of these tips to also have taller than desired flame heights. This simulation aided in making modifications to ensure proper airflow to all tips.
Type Event
Format application/pdf
Rights No Copyright issues
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ARK ark:/87278/s6pz8709
Setname uu_afrc
Date Created 2014-10-14
Date Modified 2014-10-14
ID 14377
Reference URL https://collections.lib.utah.edu/ark:/87278/s6pz8709
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