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ENCIT 2020
18th Brazilian Congress of Thermal Sciences and Engineering
STATE OF THE ART ON QUENCHING DISTANCE STUDIES
Submission Author:
Carlos Henrique Lauermann , RS
Co-Authors:
Carlos Henrique Lauermann, Thamy Cristina Hayashi, Andrés Armando Mendiburu Zevallos
Presenter: Carlos Henrique Lauermann
doi://10.26678/ABCM.ENCIT2020.CIT20-0385
Abstract
Quenching distance is a measure necessary to understand how premixed flames extinguish and to assist on the design of flame arresters. The present work aims to present the state of the art on quenching distance studies. The available theoretical model is presented with the simplified considerations to determine the quenching distance between two parallel plates. Experimental data agree with theory presented on a flame quenching by a cold wall. Temperature and pressure increases cause the quenching distance to decrease. Equivalence ratio also affects quenching distance, stoichiometric mixture provides the minimum quenching distance. The dimensionless parameter b for the quenching distance model is calculated with experimental data. In numerical modelling, detailed mechanism demonstrates better results than global mechanism because detailed mechanism predicted the flame quenching. Empirical models for temperature, pressure and flame speed are presented to predict quenching distance.
Keywords
Quenching distance, quenching flame, review
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