Accession Number : ADA531359


Title :   Application of CFD Modeling to Room Fire Growth on Walls


Descriptive Note : Final rept.


Corporate Author : CITY COLL NEW YORK DEPT OF MECHANICAL ENGINEERING


Personal Author(s) : Liang, K M ; Ma, T ; Quintiere, J G ; Rouson, D


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a531359.pdf


Report Date : Apr 2003


Pagination or Media Count : 136


Abstract : An evaluation of the NIST FDS model was conducted with particular attention for its use in predicting flame spread on surfaces. Over the course of this investigation the computational model changed from combustion depicted by particles to a mixture fraction based combustion model. The study pertains to version 2.0 released on December 4, 2001. Three aspects were considered in the study. First, we studied the evaluation of the code to predict a combusting plume. Second, the code was applied to a fire plume adjacent to a vertical wall, and then flame spread on the wall. Third, a complementary investigation of an improved algorithm for convective heat transfer at a surface was developed. The first two studies resulted in M.S. theses. Damian Rouson of CCNY performed the third study. The thesis by Ma on the axi-symmetric plume was previously transmitted and will not be included here. However, a recently accepted paper, based on the thesis with updated results is included. The general conclusions are that the FDS code is very good for computing the fluid dynamics, entrainment and flame height. The temperature in the combustion region appears to be over-estimated at the base of the geometry considered, and any related heat flux is consequently over-predicted. The temperature results are grid dependent. A computation of flame spread on vertical PMMA gave mixed results.


Descriptors :   *FIRES , *COMPUTATIONAL FLUID DYNAMICS , FLUID DYNAMICS , WALLS , HEAT FLUX , FLAME PROPAGATION , CONVECTION(HEAT TRANSFER) , MODELS , ALGORITHMS


Subject Categories : Safety Engineering
      Fluid Mechanics


Distribution Statement : APPROVED FOR PUBLIC RELEASE