RT Journal Article ID 1b64883b4ce3ebe1 A1 Suto, Hitoshi A1 Hattori, Yasuo T1 EFFECTS OF FLAME STRUCTURE ON ENTRAINMENT CHARACTERISTICS OF A FIRE PLUME JF Computational Thermal Sciences: An International Journal JO CTS YR 2015 FD 2016-06-27 VO 7 IS 5-6 SP 491 OP 500 K1 plume K1 entrainment K1 turbulent diffusion flame K1 large-eddy simulation AB Large-eddy simulations of a fire plume with flames and a buoyant plume without flames were performed. The effects of the flame structure on the entrainment characteristics in the flame region of a plume were then examined through comparison between the two sets of numerical results. The effects of the flame structure on the plume characteristics were marked only in the continuous flame and the intermittent flame regions in the fire plume. The existence of flames increased the mean value of the entrainment coefficient, which corresponds to entrainment efficiency, and the probability density of a high entrainment coefficient. In particular, a feature of a fire plume that prevents the forming of a wide high-temperature area immediately above the fire source was suggested to increase the frequency of highly entraining motion. PB Begell House LK https://www.dl.begellhouse.com/journals/648192910890cd0e,4860a26f63ba7840,1b64883b4ce3ebe1.html