Vortical structures in pool fires: Observation, speculation, and simulation

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While all fires are complex and involve many phenomena, this report is limited to large, turbulent liquid-hydrocarbon pool fires. Large, liquid-hydrocarbon pool fires present a risk in petrochemical storage and processing facilities and transportation systems that contain large amounts of liquid hydrocarbons. This report describes observations, speculations, and numerical simulations of vortical structures in pool fires. Vortical structures are observed in fires with length scales ranging from those that bend millimeter-thick flame zones to those that entrain air many meters from the edge of the fire to its centerline. The authors propose that baroclinic vorticity generation is primarily responsible for ... continued below

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103 p.

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Tieszen, S. R.; Nicolette, V. F.; Gritzo, L. A.; Moya, J. L.; Holen, J. K. & Murray, D. November 1, 1996.

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This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 55 times . More information about this report can be viewed below.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

While all fires are complex and involve many phenomena, this report is limited to large, turbulent liquid-hydrocarbon pool fires. Large, liquid-hydrocarbon pool fires present a risk in petrochemical storage and processing facilities and transportation systems that contain large amounts of liquid hydrocarbons. This report describes observations, speculations, and numerical simulations of vortical structures in pool fires. Vortical structures are observed in fires with length scales ranging from those that bend millimeter-thick flame zones to those that entrain air many meters from the edge of the fire to its centerline. The authors propose that baroclinic vorticity generation is primarily responsible for production of rotational motion at small scale and that amalgamation is responsible for the production of large-scale rotational structures from the myriad of small-scale structures. Numerical simulations show that vortical structures having time-mean definitions can be resolved with a Reynolds-Average Navier-Stokes (RANS) approach. However, for vortical structures without time-mean definition, RANS is inappropriate, and another technique, such as Large Eddy Simulation (LES), should be employed. 39 refs., 52 figs., 3 tabs.

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103 p.

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OSTI as DE97001601

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  • Other Information: PBD: Nov 1996

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  • Other: DE97001601
  • Report No.: SAND--96-2607
  • Grant Number: AC04-94AL85000
  • DOI: 10.2172/414306 | External Link
  • Office of Scientific & Technical Information Report Number: 414306
  • Archival Resource Key: ark:/67531/metadc687260

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  • November 1, 1996

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

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  • June 23, 2016, 10:59 a.m.

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Tieszen, S. R.; Nicolette, V. F.; Gritzo, L. A.; Moya, J. L.; Holen, J. K. & Murray, D. Vortical structures in pool fires: Observation, speculation, and simulation, report, November 1, 1996; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc687260/: accessed June 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.