A novel ghost‐cell immersed boundary method for fully resolved simulation of char particle combustion has been developed. The boundary conditions at the solid particle surface, such as velocity, temperature, density, and chemical species concentration, are well enforced through the present method. Two semiglobal heterogeneous reactions and one homogeneous reaction are used to describe the chemical reactions in the domain, and the Stefan flow caused by the heterogeneous reactions is considered. A satisfactory agreement can be found between the present simulation results and experimental data in the literature. The method is then used to investigate the combustion property of a char particle and the interaction between CO₂ gasification and O₂ oxidation. Furthermore, combustion effect on the exchange of mass, momentum and energy between gas‐ and solid‐ phase is explored. © 2018 American Institute of Chemical Engineers AIChE J, 64: 2851–2863, 2018

中文翻译：

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使用幻影细胞浸入边界方法完全解析单个炭颗粒燃烧的模拟

开发了一种新颖的重影细胞浸入边界方法，用于炭颗粒燃烧的完全解析模拟。通过本方法很好地实施了固体颗粒表面的边界条件，例如速度，温度，密度和化学物质浓度。用两个半全局异质反应和一个均质反应来描述该域中的化学反应，并考虑了由该异质反应引起的Stefan流。在当前的仿真结果和文献中的实验数据之间可以找到令人满意的协议。然后，该方法用于研究炭颗粒的燃烧特性以及CO ₂气化与O ₂之间的相互作用氧化。此外，还探讨了燃烧对气相和固相之间质量，动量和能量交换的影响。©2018美国化学工程师学会AIChE J，64：2851–2863，2018