摩擦阻力对双组分混合物自发凝结影响的研究  

THE NUMERICAL INVESTGATION OF THE INFLUENCES OF FRICTION DRAG ON TWO-COMPONENT MIXTURE SPONTANEOUS CONDENSATION

作　　者：蒋文明[1] 刘中良[1] 鲍玲玲[1] 庞会中[1] 孙俊芳[1] 

机构地区：[1]北京工业大学环境与能源工程学院教育部传热强化与过程节能重点实验室,北京100124

出　　处：《工程热物理学报》2009年第7期1185-1187,共3页Journal of Engineering Thermophysics

基　　金：国家自然科学基金项目(No.50676002);教育部高等学校博士学科点专项科研基金项目(No.20040005008);北京市拔尖创新人才选拔计划项目(2006)资助

摘　　要：为了揭示摩擦阻力对喷管内双组分混合物自发凝结流动的影响,建立了双组分混合物自发凝结流动数学模型,对双组分混合物的不平衡凝结流动进行了数值模拟,给出了沿喷管轴向的相关参数分布,模拟结果与相关文献实验结果基本一致。利用该模型研究了摩擦阻力对双组分混合物自发凝结的影响,发现摩擦阻力的大小对喷管内双组分混合物自发凝结参数都有很大影响,因此在喷管加工中努力提高加工精度,尽量减小摩擦阻力对自发凝结的影响是重要的。A mathematical model was developed in order to disclose the influences of friction drag on the two-component nfixture spontaneous condensation flow. A numerical simulation was performed for the two-component mixture in nozzle with the model. The comparison between numerical results and experimental measurement shows that the model is accurate. With the model we investigated the influence of flow friction drags. It was found that the friction drag has an important influence on the condensation supersonic flow.

关 键 词：自发凝结 双组分混合物 摩擦阻力 喷管 数值模拟 

分 类 号：TK124[动力工程及工程热物理—工程热物理]