Steady and transient pyrolysis of thick clear PMMA slabs

Pizzo, Yannick; Lallemand, Christine; Kacem, Ahmed; Kaiss, A.; Gerardin, J.; Acem, Zoubir; Boulet, Pascal; Porterie, B.

doi:10.1016/j.combustflame.2014.07.004

Cited by 41 publications

(22 citation statements)

References 23 publications

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“…Indeed, the flame heat flux increases through the reradiation of energy from the soot particles back to the burning sample. It is also interesting to observe that the heat fluxes evaluated here are comparable to those reported for the steady burning of vertical slabs of translucent PMMA. Indeed, depending on the sample height, the total flame heat flux varies approximately in the range 23 to 31 kW/m 2 with surface reradiation equal to 11.5 kW/m 2 .…”

Section: Resultssupporting

confidence: 61%

Numerical evaluation of the flame to solid heat flux during poly(methyl methacrylate) combustion

2018

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Summary The total net heat flux of the flame from a burning solid fuel is an important issue for the formulation of comprehensive solid‐phase models useful for the fire testing of materials, but measurements are often affected by significant inaccuracy. In this study, an evaluation is conducted using a state‐of‐the‐art model, coupling the descriptions of both gas‐ and solid‐phase processes, for a thick poly(methyl methacrylate) slab burning in a cone calorimeter. It is observed that the total net heat flux (conductive and radiant flame heat fluxes minus surface reradiation losses) remains approximately constant (about 18 kW/m2) as the intensity of the cone irradiance increases from 15 to 60 kW/m2. The influences of some model assumptions and the solid degradation kinetics on this process variable are also assessed. Acceptable agreement is obtained between the predicted and the measured mass loss rates.

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Section: Resultssupporting

confidence: 61%

Numerical evaluation of the flame to solid heat flux during poly(methyl methacrylate) combustion

2018

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“…Although the spectral distribution of radiation falling on the samples may affect the radiative properties due to the non-grey spectral nature of the polymers [34][35][36], spectrally averaged values are used in this study over the entire spectrum regardless of incident angle for simplification as those of Ref. [22,24,25,37].…”

Section: Governing Equationsmentioning

confidence: 99%

A numerical study of thermal degradation of polymers: Surface and in-depth absorption

Gong

Chen

Jiang

et al. 2016

Applied Thermal Engineering

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“…The influence of the front interface decay on combustion in the gas region is not considered. However, since the distance from the front surface to the rear surface can be calculated, the time reaching the rear surface can be calculated and the change of the cell volume size ΔV solid for each solid cell is computed following Pizzo et al [8]:…”

Section: Intermentioning

confidence: 99%

“…More recently, Leventon and Stoliarov [7] measured the heat flux on the surface of a relatively small PMMA sample during upward flame spread. Pizzo et al [8] experimentally investigated transient pyrolysis of thick clear PMMA slabs exposed to radiant heat fluxes of 14 and 18 kW/m 2 . They also conducted a second series of experiments in which the PMMA samples were exposed to incident flame heat flux of 24.5 kW/m 2 .…”

mentioning

confidence: 99%

“…Chaos et al [3] optimized the pyrolysis model parameters of various materials using evolutionary optimization methodologies and validated the predictions with in-house experimental data. Pizzo et al [8] developed a one dimensional pyrolysis model and simulated the solid phase combustion for validation. They found that the surface regression length due to the high incident heat flux and wall temperature was almost compensated by the re-radiation and gasification heat under the flaming condition.…”

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confidence: 99%

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Large eddy simulation of upward flame spread on PMMA walls with a fully coupled fluid–solid approach

Fukumoto

Wang

Wen

2018

Combustion and Flame

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2018) Large eddy simulation of upward flame spread on PMMA walls with a fully coupled fluid-solid approach. Combustion and Flame, 190 . pp. 365-387. Permanent WRAP URL: Abstract A fully coupled fluid-solid approach has been developed within FireFOAM 2.2.x, a Large Eddy Simulation (LES) based fire simulation solver within the OpenFOAM® toolbox. Due consideration 1 Corresponding author email: Jennifer.Wen@warwick.ac.uk phenomena such as investigating the effects of width, inclination angles and side walls on flame spread as well as the predictions of flame spread in practical applications. Keywords Upward flame spread, Fully coupled fluid-solid approach, Large eddy simulation, PMMA 1. The time averaged reaction rate for the mass fraction equation chemical species J J ω is expressed as ( ) J J J u J fu f ( ) ( ) J J J

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Steady and transient pyrolysis of thick clear PMMA slabs

Cited by 41 publications

References 23 publications

Numerical evaluation of the flame to solid heat flux during poly(methyl methacrylate) combustion

Numerical evaluation of the flame to solid heat flux during poly(methyl methacrylate) combustion

A numerical study of thermal degradation of polymers: Surface and in-depth absorption

Large eddy simulation of upward flame spread on PMMA walls with a fully coupled fluid–solid approach

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