Feichi Zhang, T. Zirwes, T. Häber, H. Bockhorn, D. Trimis, R. Suntz
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引用次数: 1
Abstract
. This work presents a numerical study on the effect of flame-wall interaction (FWI) from the viewpoint of flame dynamics. For that purpose, direct numerical simulations (DNS) employing detailed calculations of reaction rates and transport coefficients have been applied to a 2D premixed methane/air flame under atmospheric condition. Free flame (FF) and side-wall quenching (SWQ) configurations are realized by defining one lateral boundary as either a symmetry plane for the FF or a cold wall with fixed temperature at 20 o C for the SWQ case. Different components of flame stretch and Markstein number regarding tangential, normal (due to curvature) and total stretch, Ka s , Ka c and Ka tot = Ka s + Ka c , as well as their correlations with respect to the local flame
.本文从火焰动力学的角度对火焰-壁面相互作用(FWI)的影响进行了数值研究。为此，采用详细计算反应速率和输运系数的直接数值模拟(DNS)应用于大气条件下的二维预混甲烷/空气火焰。自由火焰(FF)和侧壁淬火(SWQ)配置是通过定义一个侧面边界来实现的，对于FF来说，它是一个对称平面，对于SWQ来说，它是一个固定温度为20℃的冷壁。火焰拉伸的不同分量和Markstein数关于切向、法向(由于曲率)和总拉伸、Ka s、Ka c和Ka tot = Ka s + Ka c，以及它们与局部火焰的相关性
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