Transition condition and control mechanism of subatmospheric flame spread rate over horizontal thin paper sample

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Transition condition and control mechanism of subatmospheric flame spread rate over horizontal thin paper sample. / Fang, Jun; He, Xuan-ze; Li, Kai-yuan; Wang, Jing-wu; Zhang, Yong-ming.

In: Combustion and Flame, Vol. 188, 01.02.2018, p. 90-93.

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Fang, Jun ; He, Xuan-ze ; Li, Kai-yuan ; Wang, Jing-wu ; Zhang, Yong-ming. / Transition condition and control mechanism of subatmospheric flame spread rate over horizontal thin paper sample. In: Combustion and Flame. 2018 ; Vol. 188. pp. 90-93.

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@article{9d2df576a95547309665b370f3e9d04a,
title = "Transition condition and control mechanism of subatmospheric flame spread rate over horizontal thin paper sample",
abstract = "The horizontal flame spread over paper samples was investigated using a subatmospheric cabin with varied O2 concentration. The 25 kPa is found to be a clear turning point for the flame illumination and structure, radiative heat flux and flame spread rate (FSR), which leads to the transition boundary between the extinction limits and power law regions. In the extinction limits (non-linear) region below 25 kPa, the oxygen partial pressure is low with a small Da number. Consequently, the flame spread is gas phase kinetics controlled, resulting in low burning rate, low radiative heat loss and weak buoyancy, and thus the FSR is more sensitive to the oxygen concentration while less sensitive to the ambient pressure. In the power law (linear) region above 25 kPa, in contrast, the oxygen partial pressure is high and the Da number is large, and the flame spread is heat transfer controlled, which weakens the dependence of FSR on oxygen concentration and enhances the dependence on air pressure.",
author = "Jun Fang and Xuan-ze He and Kai-yuan Li and Jing-wu Wang and Yong-ming Zhang",
year = "2018",
month = "2",
day = "1",
doi = "10.1016/j.combustflame.2017.09.010",
language = "English",
volume = "188",
pages = "90--93",
journal = "Combustion and Flame",
issn = "0010-2180",

}

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TY - JOUR

T1 - Transition condition and control mechanism of subatmospheric flame spread rate over horizontal thin paper sample

AU - Fang, Jun

AU - He, Xuan-ze

AU - Li, Kai-yuan

AU - Wang, Jing-wu

AU - Zhang, Yong-ming

PY - 2018/2/1

Y1 - 2018/2/1

N2 - The horizontal flame spread over paper samples was investigated using a subatmospheric cabin with varied O2 concentration. The 25 kPa is found to be a clear turning point for the flame illumination and structure, radiative heat flux and flame spread rate (FSR), which leads to the transition boundary between the extinction limits and power law regions. In the extinction limits (non-linear) region below 25 kPa, the oxygen partial pressure is low with a small Da number. Consequently, the flame spread is gas phase kinetics controlled, resulting in low burning rate, low radiative heat loss and weak buoyancy, and thus the FSR is more sensitive to the oxygen concentration while less sensitive to the ambient pressure. In the power law (linear) region above 25 kPa, in contrast, the oxygen partial pressure is high and the Da number is large, and the flame spread is heat transfer controlled, which weakens the dependence of FSR on oxygen concentration and enhances the dependence on air pressure.

AB - The horizontal flame spread over paper samples was investigated using a subatmospheric cabin with varied O2 concentration. The 25 kPa is found to be a clear turning point for the flame illumination and structure, radiative heat flux and flame spread rate (FSR), which leads to the transition boundary between the extinction limits and power law regions. In the extinction limits (non-linear) region below 25 kPa, the oxygen partial pressure is low with a small Da number. Consequently, the flame spread is gas phase kinetics controlled, resulting in low burning rate, low radiative heat loss and weak buoyancy, and thus the FSR is more sensitive to the oxygen concentration while less sensitive to the ambient pressure. In the power law (linear) region above 25 kPa, in contrast, the oxygen partial pressure is high and the Da number is large, and the flame spread is heat transfer controlled, which weakens the dependence of FSR on oxygen concentration and enhances the dependence on air pressure.

UR - http://www.scopus.com/inward/record.url?scp=85030837661&partnerID=8YFLogxK

U2 - 10.1016/j.combustflame.2017.09.010

DO - 10.1016/j.combustflame.2017.09.010

M3 - Article

VL - 188

SP - 90

EP - 93

JO - Combustion and Flame

JF - Combustion and Flame

SN - 0010-2180

ER -

ID: 15847043