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A generalized analysis for liquid-fuel vaporization and burning
Affiliation:1. School of Molecular Sciences, Arizona State University, PO Box 871604, Tempe, AZ 85287, United States;2. Department of Physics and School of Molecular Sciences, Arizona State University, PO Box 871504, Tempe, AZ 85287, United States;1. Universidad Anáhuac Mayab, División de Ingeniería y Ciencias Exactas, Carretera Mérida-Progreso km 15.5 AP 96-Cordemex, CP 97310 Mérida, Yucatán, Mexico;2. Centro de Investigación Científica de Yucatán, Unidad de Materiales, Calle 43, No. 130 Col. Chuburná de Hidalgo, 97200 Mérida, Yucatán, Mexico;3. Centro de Investigación y de Estudios Avanzados del IPN, Unidad Mérida, Departamento de Física Aplicada, AP 73-Cordemex, 97310 Mérida, Yucatán, Mexico
Abstract:A generalized method is presented for vaporization and combustion of multiple-droplet arrays, liquid films, pools, and streams. Conditions are explained for the existence of a mass flux potential function that is independent of fuel type and scalar boundary conditions and satisfies the three-dimensional Laplace’s equation. Gas-phase properties, composition, and flame location are functions only of the potential function, specified scalar boundary conditions, and fuel type. Variable properties are considered. Flame stand-off distances for liquid interfaces near wet-bulb temperatures are predicted more accurately with variable properties. Flame location and transport properties are found for decane, heptane, and methanol fuels, with different ambient conditions. The analysis also applies to vaporization without combustion and to combustion with transient liquid-phase heating.
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