We investigate numerically the effect of heat loss and strain rate on the premixed flame edges encountered in a two-dimensional counterflow configuration for Lewis number higher than one. Under nonadiabatic conditions, multiple flame edges and multiple propagation speeds (positive and negative) are discussed. Different regions of multiple propagation speeds have been revealed ranging from two to four, depending on the value of the heat loss parameter and Damkohler number, which is inversely proportional to the strain rate. A combustion wave is modeled by connecting a strongly burning flame on one side of the burner to a weakly burning flame on the other side. These combustion waves are changing with increasing Dam number into flame edges with the fact that the strongly burning flame is the dominant.
Multiplicity of Premixed Flames Under the Effect of Heat Loss
Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF THERMAL SCIENCE AND ENGINEERING APPLICATIONS. Manuscript received May 10, 2016; final manuscript received September 17, 2016; published online March 21, 2017. Assoc. Editor: Ziad Saghir.
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Al-Sarairah, E., Ghenai, C., and Hachicha, A. (March 21, 2017). "Multiplicity of Premixed Flames Under the Effect of Heat Loss." ASME. J. Thermal Sci. Eng. Appl. September 2017; 9(3): 031001. https://doi.org/10.1115/1.4035922
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