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oai:uvadoc.uva.es:10324/617382025-02-20T13:09:09Zcom_10324_1170com_10324_931com_10324_894col_10324_1367

Reyes Serrano, Miriam 785f7e517b20cf4b 600 0000-0003-0993-7361 Sastre Zamora, Rosaura 72dee087643220fe 600 0000-0002-5992-6153 Giménez Olavarría, Blanca b0e9be2e367d5044 600 0000-0002-3848-1722 Sesma Gutiérrez, Clara 282437e3-6300-45d1-bb48-450f09667463 600 2023-09-21T11:17:34Z 2023-09-21T11:17:34Z 2022 Energies, 2022, Vol. 15, Nº. 10, 3722 1996-1073 https://uvadoc.uva.es/handle/10324/61738 10.3390/en15103722 3722 10 Energies 15 1996-1073 Producción Científica In this work, an experimental study and kinetic characterization of the combustion process and a morphologic study of hydrogen/methane–air mixtures are presented. The experimental study was performed in an optical access cylindrical constant-volume combustion bomb. This bomb is equipped to register the instantaneous pressure during combustion and records the combustion images using the high-speed Schlieren optical technique. This provides straightforward information to compute the flame propagation speed and direct evidence of the apparition of cellularity on the flame front. Through the images of the combustion process, it is possible to conduct a morphological study of the process using a flame monitoring model. Simultaneously, by means of a two-zone thermodynamical model, with the temporal evolution of pressure as the main intake, significant parameters are determined during the combustion process of different fuels under premixed conditions: burning velocity, rate of combustion, burned and unburned temperature, burned mass fraction, and rate of heat release, among others. Experimental results are compared with kinetic modeling results obtained with the Cantera package using the Gri-Mech 3.0 kinetic mechanism. Results show that a greater percentage of hydrogen in the fuel mixture increases the burning velocity and the cellularity of the flame front surface. At the same time, leaner mixtures and higher equivalence ratios enhance the apparition of the cellularity onset in the flames. Burning velocity increases with the increase in the initial temperature and the fuel/air mixture equivalence ratio. All the results obtained were validated with other data from the literature. Ministerio de Ciencia e Innovación/Agencia Estatal de Investigación (AEI) - (project PID2019-106957RB-C22) application/pdf eng MDPI info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/4.0/ © 2022 The Authors Atribución 4.0 Internacional Hydrogen Hidrógeno Methane Metano Combustion bomb Combustion Motores de combustión interna Gas (Combustible) Cellularity Burning velocity Gases - Combustión 3303.06 Tecnología de la Combustión 2205.04 Mecánica de Fluidos Experimental, kinetic modeling and morphologic study of the premixed combustion of hydrogen/methane mixtures info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://www.mdpi.com/1996-1073/15/10/3722 SI THUMBNAIL Experimental-Kinetic-Modeling-and-Morphologic-Study.pdf.jpg Experimental-Kinetic-Modeling-and-Morphologic-Study.pdf.jpg IM Thumbnail image/jpeg 3331 https://uvadoc.uva.es/bitstream/10324/61738/4/Experimental-Kinetic-Modeling-and-Morphologic-Study.pdf.jpg 945f313f08301058a405b404e5d88b12 MD5 4 LICENSE license.txt license.txt text/plain 3929 https://uvadoc.uva.es/bitstream/10324/61738/3/license.txt 289d98c1665ee0d20312360f0e8643c8 MD5 3 CC-LICENSE license_rdf license_rdf application/rdf+xml; charset=utf-8 921 https://uvadoc.uva.es/bitstream/10324/61738/2/license_rdf 9eecc1514e7247cad41e4db756248760 MD5 2 ORIGINAL Experimental-Kinetic-Modeling-and-Morphologic-Study.pdf Experimental-Kinetic-Modeling-and-Morphologic-Study.pdf application/pdf 2239130 https://uvadoc.uva.es/bitstream/10324/61738/1/Experimental-Kinetic-Modeling-and-Morphologic-Study.pdf 6751bfbf78dffa42f2fd96df9240cf0b MD5 1 10324/61738 oai:uvadoc.uva.es:10324/61738 2025-02-20 14:09:09.212 UVaDOC repositorio@uva.es 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