Flame Height of a Turbulent Diffusion Jet Flame with a Comparatively High Initial Discharging Velocity

Fire Science and Technology

Kyoko Kamiya³  Yutaka Yamamoto⁴  Osami Sugawa²  Yasushi Oka¹  Tomohiko Imamura²  Toshimitsu Suzuki⁵ 

[1] Department of Environment and Information Sciences, Yokohama National University, Japan;Department of Mechanical Systems Engineering, Tokyo University of Science, Suwa, Japan;Graduate School of Environment and Information Sciences, Yokohama National University, Japan;Tokyo Fire Department, Japan;Tokko Inc., Japan

关键词: Plastic waste;    Odor;    Electronic nose;    Spontaneous combustion;    Odor intensity;   

DOI  :  10.3210/fst.29.15

学科分类：环境科学（综合）

来源: Tokyo University of Science * Center for Fire Science and Technology for Building

【 摘 要 】

References(15)A series of experiments was carried out in order to investigate the visible flame height of a jet flame with a high initial discharging velocity where the fuel-release time and mass flow rate of fuel were varied. The values of non-dimensional heat release rate (Q*) in present experiment were in the range of 107 Q* 8. Even if the value of Q* was larger than 106, when the non-dimensional number (RM) employed by Heskestad which implies the ratio of gas release momentum to the momentum made by a purely buoyant diffusion flame was less than 0.1, the flame height with a comparatively high initial discharging velocity increased with the heat release rate. In other words, whether flame height depends on the Q*2/5 or not can be decided by the range of momentum ratio (RM) regardless of the range of non-dimensional heat release rate (Q*). This can be also decided by the fire Froude number employed by Delichatsios.

【 授权许可】

Unknown