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个人信息Personal Information
教授
博士生导师
硕士生导师
任职 : 现任中国工程热物理学会流体机械专委员会委员、中国航空学会学轻型燃气轮机分会委员、教育部重型燃气轮机教学资源库专家委员会委员、辽宁省能动类专业教指委副主任、大连市核事故应急指挥部专家组成员等职。
性别：女
毕业院校：大连理工大学
学位：硕士
所在单位：能源与动力学院
电子邮箱：dlwxf@dlut.edu.cn
Effect of Nozzle Outlet Diameter on Jet Flow Field and Optimal Standoff Distance in Cold Spraying
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论文类型：会议论文
发表时间：2011-01-01
收录刊物：CPCI-S
卷号：4
页面范围：536-541
关键字：Cold spraying; free jet; impinging jet; numerical simulation; optimal standoff distance
摘要：The gas flow structure outside the nozzle takes a significant role in particle impinging velocity in cold spraying. In this study, numerical method is employed to study the single-phase free jet flow and the two-phase impinging jet flow outside the nozzle. Based on the simulated results, it is found that nozzle outlet diameter significantly affects the gas flow field and thus the particle acceleration. Between the nozzle outlet and substrate, there exists an optimal standoff position where sprayed particles can obtain the maximum impinging velocity. Besides, this optimal standoff distance increases linearly with the increment in nozzle outlet diameter.