Large Scale Simulation Of High Pressure
Water Mist Systems
Author(s)
T. Sikanen, J. Vaari & S. Hostikka
Abstract
Water mists systems are used to protect people and property from fires. They
suppress fires by three main mechanisms: removal of heat from the gases,
displacement of oxygen by water vapour and attenuation of radiation by droplets.
Correct prediction of these mechanisms hinges on accurate modeling of droplet
transport. This paper discusses the modeling and simulation of high speed water
mist systems using Large Eddy Simulation and a Lagrangian description of the
spray. The focus is on the droplet transport. Particular attention is given to
the droplet injection model and sub models for coupling of the dispersed and
continuous phases. Effects of turbulence modeling on droplet transport is explored.
The modeling results are compared to experimental data from both small and large
scale experiments.
Keywords: water mist, interphase momentum transfer, turbulence modeling, large
eddy simulation, lagrangian-eulerian,large scale.
Keywords
Keywords: water mist, interphase momentum transfer, turbulence modeling, large
eddy simulation, lagrangian-eulerian,large scale.
Related Book
Other papers in this volume
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