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Article Dans Une Revue Combustion Science and Technology Année : 2013

Combustion Characteristics of p-cymene Possibly Involved in Accelerating Forest Fires

Résumé

A potential implication of Volatile Organic Compounds (VOCs) emitted by vegetal species has been introduced in the literature to explain accelerating forest fires. The main purpose of this paper is to determine the combustion characteristics of a VOC emitted by Rosmarinus officinalis shrubs, namely p-cymene. The emission of this compound is studied for the temperature range 353-475 K and an emission peak is found at 448 K. Laminar burning speeds, Markstein lengths and flame thicknesses are determined using outwardly propagating spherical flames in a combustion chamber at atmospheric pressure. The effects of equivalence ratio (0.8 to 1.4) and unburned gas temperature (358 to 453 K) are studied. A correlation is proposed to estimate laminar burning speeds as a function of equivalence ratio and temperature. Due to the lack of data concerning the combustion characteristics of p-cymene, our results are compared to experimental data of heavy molecules like ethylbenzene, iso-octane, -pinene and to computed ones of JP-10 and n-decane. The computed laminar burning speeds of these last two molecules are obtained using the PREMIX code of the CHEMKIN package
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Dates et versions

hal-00848348 , version 1 (26-07-2013)

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Khaled Chetehouna, Léo Courty, Christine Mounaïm-Rousselle, Fabien Halter, Jean-Pierre Garo. Combustion Characteristics of p-cymene Possibly Involved in Accelerating Forest Fires. Combustion Science and Technology, 2013, In press. ⟨10.1080/00102202.2013.795557⟩. ⟨hal-00848348⟩
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