Boulder Fluid and Thermal Sciences Seminar Series

Friday, March 16, 2018

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2:00pm-3:00pm (refreshments at 1:45pm)
Clark Conference Room (ECAD 150)
Engineering Center
University of Colorado at Boulder

Add to Calendar 03/16/2018 2:00:00 PM 03/16/2018 3:00:00 PM 9 Boulder Fluid and Thermal Sciences Seminar Engineering Center, University of Colorado, Boulder MM/DD/YYYY

Detailed Modeling of Turbulent Fire Systems

Xinyu Zhao University of Connecticut

Fire spans a large range of temporal and spatial scales, and involves multiphysical processes. Turbulence, homogeneous and heterogeneous chemical reactions, radiative heat transfer, and multiphase transport can simultaneously be significant in fire. To maintain reasonable computational cost, reduced-order models are often required to describe these processes in order to predict the dynamics of fire. Such reduced-order models often require extension or re-formulation whenever a new aspect of the underlying physics demands attention. In this talk, our recent effort on developing high-fidelity models for the fire environment is introduced. In particular, we are concerned with the scenario of fire extinguishment where turbulence-droplet-radiation interactions are important. The solutions obtained from the high-fidelity models are leveraged to provide benchmark data for the reduced-order models or to provide closure information. Two modeling aspects are detailed in this talk, including the development of a comprehensive Monte Carlo ray tracing solver that accounts for radiative interactions between gas, soot, wall and water droplets, as well as the development of a reduced-order soot model. Finally, the numerical aspects of the underlying flow solver (OpenFOAM), as well as the effort in enabling large-scale direct numerical simulation on the multicore computing architectures (i.e., Intel Knights Landing) are briefly discussed.


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Support from Herbert and Karen Vogel is gratefully acknowledged through a Vogel Faculty Fellowship at the University of Colorado, Boulder.



The seminar is held at the Discovery Learning Center (DLC) at the University of Colorado. Parking is free with a permit, which is provided at the seminar. The location for parking is shown in the map below.

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