This study was aimed at examining the influence of the system rotation as an external action on the development of vortical structures and combustion. Specifically, three-dimensional direct numerical simulations of compressible mixing layers with non-premixed ${\mathrm{H}}_2$/air combustion were performed using a detailed chemical reaction scheme. The relationship between the developing vortical structures and chemical reactions in the flow field with the rotation was investigated. The development of combustion changed depending on the vortical structures, and the presence of roller vortices promoted the combustion phenomena. The influence of the vortical structures on the elementary reactions, which contribute to the heat release rate, was small. During the anticyclonic rotation, the roller vortices collapsed and suppressed the combustion. In contrast, the cyclonic rotation resulted in the generation of quasi-2D roller vortices, which enlarged the high-heat-release-rate regions and promoted the combustion. Overall, the vortical structures induced by the rotation can change the development of combustion even though the elementary reactions that contribute to the heat release rate remain unchanged. The presented findings can guide the prediction and control of turbulent combustion in practical situations involving fluid machinery.

本研究旨在检验作为外部作用的系统旋转对涡流结构和燃烧发展的影响。具体而言，可压缩混合层的三维直接数值模拟与非预混${\mathrm{H}}_2$/空气燃烧使用详细的化学反应方案进行。研究了随着旋转的流场中发展的涡结构和化学反应之间的关系。燃烧的发展取决于涡结构，而滚子涡的存在促进了燃烧现象。涡旋结构对有助于放热速率的基元反应的影响很小。在反气旋旋转过程中，滚子涡流崩溃并抑制了燃烧。相反，气旋旋转导致准二维滚子涡旋的产生，从而扩大了高放热率区域并促进了燃烧。总体，由旋转引起的涡旋结构可以改变燃烧的发展，即使对热释放速率有贡献的基本反应保持不变。所提出的研究结果可以指导涉及流体机械的实际情况中湍流燃烧的预测和控制。