摘要
本论文将量纲分析法引入全场光学测量示踪粒子跟随性的研究中,给出了粒子跟随性的无量纲数学表述。并据此对湍流中粒子的运动进行了数值计算,定量分析了粒径、无量纲密度及脉动频率等参数对示踪粒子跟随特性的影响,系统分析和数值模拟了示踪粒子的跟随性,为有效地实现高速复杂流场的全场光学测量提供理论依据。
In this paper, the dimensional analysis method is used to study the following features of particle tracers in flow field. The nondimensional description expression of following features is presented. The particle movement in turbulent is investigated numerically ; and the effects of several parameters, such as particle diameter, nondimensional density and oscillation frequency on the following features of the particles are analyzed quantitatively. The conclusions presented in this paper will be helpful to increase the accuracy of flow measurements.
出处
《仪器仪表学报》
EI
CAS
CSCD
北大核心
2009年第2期225-231,共7页
Chinese Journal of Scientific Instrument
基金
国家自然科学基金(60578054)资助项目
关键词
湍流
示踪粒子
跟随性
量纲分析
数值分析
turbulent
particle tracer
following feature
dimensional analysis
numerical analysis
