The combustion performance and flue gas flow pattern of hot blast stoves significantly affect the temperature distribution of the combustion chamber and regenerator, as well as the air supply temperature and duration. In this study, a 3D fluid flow heat transfer model coupled with turbulence, combustion, heat radiation, and heat exchange models is established to study the combustion and air supply characteristics of a traditional hot blast stove. The results indicate that the nozzle arrangement on the traditional stove causes the flue gas to exhibit a high‐speed swirling flow. Due to the expansion of the flue gas and the centrifugal effect of the swirling flow, the “attachment” phenomenon of the fluid (i.e., a high edge velocity and a low center velocity) occurs in the combustion chamber, resulting in an unreasonable temperature distribution in the combustion chamber and regenerator. Accordingly, an improved design of a top combustion hot blast stove is proposed to solve this problem, and its performance is evaluated and compared with that of the original design via numerical simulations.

中文翻译：

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送风过程的数值模拟与传统顶燃热风炉的优化设计

热风炉的燃烧性能和烟气流动模式会显着影响燃烧室和蓄热室的温度分布以及供气温度和持续时间。在这项研究中，建立了结合湍流，燃烧，热辐射和热交换模型的3D流体流传热模型，以研究传统热风炉的燃烧和空气供应特性。结果表明，传统火炉上的喷嘴布置导致烟气呈现高速旋流。由于烟道气的膨胀和旋流的离心作用，在燃烧室中会发生流体的“附着”现象（即，较高的边沿速度和较低的中心速度）。导致燃烧室和蓄热室中的温度分布不合理。因此，提出了一种顶部燃烧热风炉的改进设计方案来解决该问题，并通过数值模拟对其性能进行了评估并与原始设计方案进行了比较。