Statistical Study of the Deviations in Ignition Delay Time Estimations for H2/CH4 Fuel Mixtures using Commercial and Open-Source Code

Yepes*, Hernando A.; Salazar, Adalberto; Cardona, Arley

Statistical Study of the Deviations in Ignition Delay Time Estimations for H2/CH4 Fuel Mixtures using Commercial and Open-Source Code

dc.creator	Yepes*, Hernando A.
dc.creator	Salazar, Adalberto
dc.creator	Cardona, Arley
dc.date	2023-12-29
dc.date.accessioned	2025-10-01T23:53:10Z
dc.description	An adequate ignition delay time prediction is one of the most important study fields in combustion engineering. In this way, the aim of this study was to evaluate the possible deviations that an open-source program such as Cantera may present with respect to the results delivered by a commercial application, in this case, CHEMKIN 19.0. The methodology used in the work was based on the comparison of means with respect to a fixed value and the analysis of variance (ANOVA), considering a complete factorial experimental design of the 2k type. A variable transformation on the relative differences was applied in order to achieve the normal distribution condition. The obtained results establish that disagreement exists from a statistical point of view, although negligible for a practical and engineering focus. In conclusion, a confidence interval and superior threshold could be established for the differences with a 95 % confidence. The sixth root of the relative differences is lower for 0.8 and it is into the 0.67 and 0.71 interval, confirming that the deviations are irrelevant since the relative differences are even less.	en-US
dc.description	La adecuada estimación del tiempo de retraso a la ignición es uno de los temas de mayor relevancia en la ingeniería de combustión. En este sentido, el objetivo del presente estudio fue evaluar las posibles desviaciones que puede presentar un programa de código libre como es Cantera respecto a los resultados entregados por una aplicación comercial, en este caso CHEMKIN 19.0. La metodología empleada en el trabajo estuvo basada en la comparación de medias con respecto a un valor fijo y el análisis de varianza (ANOVA), considerando un diseño experimental factorial completo del tipo 2k. Se aplicó una transformación a la diferencia relativa estimada para ser usada como variable de respuesta cumpliendo así la condición de distribución normal. Los resultados obtenidos permiten establecer que existen desviaciones desde un punto de vista estadístico, aunque estas son muy pequeñas y descartables desde un enfoque práctico y de ingeniería. Como conclusión, se pudo establecer un intervalo de confianza y un umbral superior para dichas diferencias con un 95 % de confianza, donde la raíz sexta de la desviación relativa promedio no supera el valor de 0.8 y además está contenida entre 0.67 y 0.71, confirmando que las diferencias no son relevantes teniendo en cuenta que la desviación relativa es aún menor.	es-ES
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dc.identifier	https://revistas.itm.edu.co/index.php/tecnologicas/article/view/2850
dc.identifier	10.22430/22565337.2850
dc.identifier.uri	https://hdl.handle.net/20.500.12622/7887
dc.language	spa
dc.publisher	Instituto Tecnológico Metropolitano (ITM)	es-ES
dc.relation	https://revistas.itm.edu.co/index.php/tecnologicas/article/view/2850/3011
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dc.rights	Derechos de autor 2023 TecnoLógicas	es-ES
dc.rights	https://creativecommons.org/licenses/by-nc-sa/4.0	es-ES
dc.source	TecnoLógicas; Vol. 26 No. 58 (2023); e2850	en-US
dc.source	TecnoLógicas; Vol. 26 Núm. 58 (2023); e2850	es-ES
dc.source	2256-5337
dc.source	0123-7799
dc.subject	Tiempo de retraso a la ignición	es-ES
dc.subject	autoignición	es-ES
dc.subject	hidrógeno	es-ES
dc.subject	código abierto	es-ES
dc.subject	ANOVA	es-ES
dc.subject	Ignition delay time	en-US
dc.subject	autoignition	en-US
dc.subject	hydrogen	en-US
dc.subject	open-source code	en-US
dc.subject	ANOVA	en-US
dc.title	Statistical Study of the Deviations in Ignition Delay Time Estimations for H2/CH4 Fuel Mixtures using Commercial and Open-Source Code	en-US
dc.title	Estudio estadístico de las desviaciones en las estimaciones del tiempo de retraso a la ignición para mezclas de H2/CH4 utilizando un código comercial y de fuente abierta	es-ES
dc.type	info:eu-repo/semantics/article
dc.type	info:eu-repo/semantics/publishedVersion
dc.type	Research Papers	en-US
dc.type	Artículos de investigación	es-ES