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A Study on the Radiation Effect of the Smoke Movement in Room Fires  

Jeong, Jin-Yong (Department of Mechanical Engineering, Chung-Ang University)
Ryou, Hong-Sun (Department of Mechanical Engineering, Chung-Ang University)
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International Journal of Air-Conditioning and Refrigeration / v.10, no.3, 2002 , pp. 162-175 More about this Journal
To investigate smoke movement with radiation in a room fires, a numerical and experi-mental analysis were performed. In this paper, results from a field model based on a self-developed SMEP (Smoke Movement Estimating Program) were compared with Stockier's ex-periment and the experiments on various sized pool fires in a room with door The SMEP using PISO algorithm solves conservation equations for mass, momentum, energy and species, together with those for the modified k- $\varepsilon$ turbulence model with buoyancy term. Also it solves the radiation equation using the S-N discrete ordinates method (DOM). The result of the cal-culated smoke temperature considering radiation effect has shown good agreement compared with the experimental data, although there are large discrepancy in the hot smoke layer be-tween the temperature predicted by the SMEP with only convection effect and obtained by the experimental result. This large discrepancy is caused from the radiation effect of $H_2O$ and $CO_2$ gas under smoke productions. Hence the radiation effect under smoke in fire is the point to be specially considered in order to produce more realistic result.
SMEP; PISO algorithm; Discrete ordinate method; Radiation effect;
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