Publication: Estudio experimental de inestabilidades de llamas en microcanales
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2018-07-03
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2018-07-03
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Abstract
En este trabajo se pretende caracterizar la propagación de llamas en microcanales mediante el estudio experimental de las inestabilidades que presentan.
Este estudio consiste en la realización de vídeos a alta velocidad de la propagación de llamas de combustibles gaseosos en cámaras muy esbeltas, variando tanto el gas, metano o propano, como la riqueza de la mezcla (dosado), así como la configuración, espesor y material de la tapa de la cámara de combustión. Después, se procede al tratamiento de las imágenes generadas durante los experimentos, a través del desarrollo de un conjunto de algoritmos y aplicaciones, mediante el uso del programa de código abierto Image-J y el programa Matlab.
De esta forma, se obtiene el porcentaje de área quemada, el ritmo de quemado y número de celdas que presenta el frente de llama en cada instante de tiempo. Los resultados extraídos muestran que los algoritmos desarrollados a lo largo de este trabajo pueden contribuir a la caracterización de las llamas de premezcla y sus inestabilidades.
In this thesis, we intend to characterize the propagation of flames in microchannels through the experimental study of the instabilities they present. This study consists in the realization of high speed videos of the propagation of gaseous fuel flames in very slender chambers, varying both gas, methane or propane, as well as the richness of the mixture (dosed), the configuration, thickness and material of the lid of the combustion chamber. Then, the images generated during the experiments are processed, through the development of a set of algorithms and applications, using the open source program Image-J and the Matlab software. In this way, the percentage of the burnt area, the burning rate and the number of cells presented by the flame front at each time instant is obtained. The extracted results show that the algorithms developed throughout this thesis can contribute to the characterization of pre-mix flames and their instabilities.
In this thesis, we intend to characterize the propagation of flames in microchannels through the experimental study of the instabilities they present. This study consists in the realization of high speed videos of the propagation of gaseous fuel flames in very slender chambers, varying both gas, methane or propane, as well as the richness of the mixture (dosed), the configuration, thickness and material of the lid of the combustion chamber. Then, the images generated during the experiments are processed, through the development of a set of algorithms and applications, using the open source program Image-J and the Matlab software. In this way, the percentage of the burnt area, the burning rate and the number of cells presented by the flame front at each time instant is obtained. The extracted results show that the algorithms developed throughout this thesis can contribute to the characterization of pre-mix flames and their instabilities.
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Llamas de premezcla, Combustión, Tratamiento de imagen, Algoritmos