液雾燃烧的全尺度直接数值模拟  

Fully-Resolved Direct Numerical Simulation of Spray Combustion

作　　者：邵长孝[1] 柴敏[1] 王海鸥[1] 罗坤[1] 樊建人[1] Shao Changxiao;Chai Min;Wang Haiou;Luo Kun;Fan Jianren(State Key Laboratory of Clean Energy Utilization,Zhejiang University,Hangzhou 310027,China)

机构地区：[1]浙江大学能源清洁利用国家重点实验室

出　　处：《燃烧科学与技术》2019年第5期379-383,共5页Journal of Combustion Science and Technology

基　　金：国家自然科学基金资助项目(91541202,91741203);中国博士后科学基金资助项目(2018M642428);中央高校基础研究基金资助项目(2018FZA 4009)

摘　　要：针对雾化燃烧的模拟精度受雾化模型影响较大的问题,发展了一种适用于液雾燃烧的全尺度直接数值模拟方法,不需要采用雾化模型,而是直接求解雾化、蒸发和燃烧过程,其模拟的可靠性在Stefan问题和液滴燃烧两个算例中得到了检验验证.结果表明:模拟结果与理论值和实验值吻合.该方法为下一步液雾湍流燃烧的高精度全尺度直接数值模拟研究提供了数值基础.The atomization model has a major effect on the simulation accuracy of spray combustion.To solve this problem,a fully-resolved direct numerical simulation framework instead of an atomization model is developed in this paper to directly simulate the atomization,evaporation and combustion processes.The reliability of simulations is validated by two numerical examples,i.e.,the Stefan problem and droplet combustion.Results show that the numerical results are in agreement with the theoretical and experimental results.The proposed method provides a numerical foundation for the high-resolution fully-resolved direct numerical simulation of turbulent spray combustion in the future.

关 键 词：直接数值模拟 全尺度 雾化 蒸发 燃烧 

分 类 号：TK11[动力工程及工程热物理—热能工程]