This paper is focusing on the numerical simulation of a swirling flame, resulting from the interaction of multiple fires, evolving in a free and unlimited environment. A typical system, formed by a central fire source surrounded by four heat sources, is used. Since the thermal characteristic of the surrounding sources is the main engine for the rotation of flame, a detailed study is performed by varying the heating flux of these sources. This study shows that an increase of the heating flux of surrounding sources has as a result an intensification of the penetrating air puffs through the openings between the surrounding four heat sources. These puffs tangentially drive the central flame, thus producing a marked improvement on the angular momentum. Moreover, this study shows that the flame height is strongly affected by the flame rotation. Moreover, two different aspects of the flame height evolution are observed from the flow visualization and the thermal and dynamic fields for the different cases studied.

中文翻译：

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研究周围材料环境对旋转火焰结构的热行为影响

本文着重于旋转火焰的数值模拟，该旋转火焰是由多种火灾在自由和无限制的环境中演变而来的结果。使用一个典型的系统，该系统由一个中央火源和四个热源围绕而形成。由于周围源的热特性是火焰旋转的主要动力，因此通过改变这些源的热通量来进行详细研究。这项研究表明，周围热源的热通量的增加导致通过周围四个热源之间的开口的穿透空气的抽吸增强。这些抽吸会切向驱动中心火焰，从而对角动量产生显着改善。此外，这项研究表明，火焰高度受火焰旋转的强烈影响。此外，