Rubble Fire Multi-Phase Model Development

Technical Report · Fri Sep 01 04:00:00 EDT 2017

DOI:https://doi.org/10.2172/1599979· OSTI ID:1599979

Koo, Heeseok ^[1]; Brown, Alexander ^[1]; Voskuilen, Tyler ^[1]; Pierce, Flint ^[1]

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

This report presents multi-phase modeling approaches that are developed for simulating rubble fire scenarios similar to a large-scale rubble pool fire test at Sandia National Laboratories using composite materials and jet fuel. The rubble pool fire test burnt oddly shaped combustible solid objects submerged in liquid fuel. As an intermediate step toward a full scale rubble fire simulation, various model improvement tasks were performed. For modeling solid decomposition, a multi-step degradation model was used for canonical verification problems and the Chemical Percolation for Devolatilization (CPD) approach was implemented. Capabilities of Lagrangian particle approach has been extended such that a group of particles may represent a solid bulk. For gas-liquid interface, the volume of fluid (VOF) technique was implemented and relevant physics were added. The developed tools offer a potential for simulating three-phase (gas, liquid, and solid) combustion applications.

• Research Organization: Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• DOE Contract Number: AC04-94AL85000; NA0003525
• OSTI ID: 1599979
• Report Number(s): SAND--2017-9463; 656725
• Country of Publication: United States
• Language: English

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