PDF全文下载：2017030087
惠媛媛，仇性启*， 夏宇， 郑志伟
（中国石油大学（华东） 化学工程学院， 山东 青岛266580）
摘要:在考虑气体可压缩特性的基础上，针对气相旋流流场开展理论分析，结果表明喷嘴受限空间内气相旋流流场为强制涡与准自由涡的组合涡，并推导出适用于具有可压缩性和黏性的旋流气体运动规律通式；同时应用Fluent数值模拟软件对喷嘴开展气体单相数值研究，分析其流场分布特性，并利用模拟结果得出气流内部强制涡的旋流指数为n=－1，外部准自由涡的旋流指数为n=0.25；综合理论和数值研究推导出适用于可压缩旋流气体三相速度和压力沿径向的分布规律。本工作成果为深入研究旋流自吸式喷嘴的引射性能，雾化机理和雾化特性提供了理论依据。
关键词:旋流流场； 速度分布； 压力分布； 旋流自吸式喷嘴
中图分类号：TE 08；O 354文献标志码：A
引用格式：惠媛媛，仇性启，夏宇，等.旋流自吸式喷嘴气相旋流流场理论数值分析\[J\].青岛科技大学学报（自然科学版），2017，38（3）：87-92.
HUI Yuanyuan， QIU Xingqi， XIA Yu， et al. Theoretical analysis and numerical simulation on swirled flow field of gas phase of the rotational-flow and self-priming nozzle \[J\]. Journal of Qingdao University of Science and Technology（Natural Science Edition),2017,38(3)：87-92.
Theoretical Analysis and Numerical Simulation on Swirled Flow Field of Gas Phase of the Rotational-Flow and Self-Priming Nozzle
HUI Yuanyuan， QIU Xingqi， XIA Yu， ZHENG Zhiwei
(College of Chemical Engineering, China University of Petroleum， Qingdao 266580， China)
Abstract: The article first analysed the theory of the swirled flow field of gas phase based on compressibility, which showed that the swirled flow field in limited space was the combination of quasi free vortex and forced vortex, acquiring general formula of movement law applied to gas with compressibility and viscosity. And then, numerical simulation was carried out by using the software Fluent to analyse the single gas phase and its distributing characteristics of flow field, proving that the swirl index n of the forced vortex inside airflow equaled to -1 and that of the quasi free vortex movement outside airflow equaled to 0.25. Finally, connecting theoretical analysis with numerical simulation yielded three-phase velocity and pressure changes along radius applied to compressible gas. The research layed the foundation and theoretical basis of further study on ejecting performance, atomization mechanism and atomization characteristics of the air swirled ejector nozzle.
Key words: swirled flow field； velocity distribution； pressure distribution； rotational-flow self-priming nozzle
收稿日期：2016-04-10
基金项目：中国石油大学（华东）研究生创新工程资助项目（YCX2015034）.
作者简介：惠媛媛（1990—），女，硕士研究生.*通信联系人.
文章编号：16726987（2017）03008706； DOI： 10.16351/j.1672-6987.2017.03.016
