航空工程进展2024，Vol.15Issue(2)：35-41,7.DOI:10.16615/j.cnki.1674-8190.2024.02.04
不同形状颗粒的阻力系数实验研究
Research on the drag coefficient of particles with different shapes
摘要
Abstract
The resistance characteristics of aero-engine high-altitude ice crystal particles will affect the movement of ice crystals.In order to explore the influence of different shapes of ice crystals on the drag coefficient,the paper adopts the method of high-speed camera tracking to investigate the drag coefficient of spherical particles and non-spherical particles(long cylinder,short cylinder and disk).The Reynolds number and drag coefficient of different particles are obtained according to the velocity of particles at uniform velocity,and the correlation formula for calcu-lating drag coefficient of different particles in the working condition range is obtained by fitting experimental data.Finally,the correlation formula is verified by using experimental data other than fitting data.The results show that the Reynolds number ranges from 3 961 to 24 144.The average relative error between the calculated and experi-mental values of the four particle resistance coefficients is less than 5%.关键词
冰晶/阻力系数/发动机结冰/非球形颗粒/高速摄像机Key words
ice crystals/drag coefficient/engine icing/non-spherical particles/high-speed cameras分类
航空航天引用本文复制引用
刘建芳,沈浩,张丽芬,朱鹏飞..不同形状颗粒的阻力系数实验研究[J].航空工程进展,2024,15(2):35-41,7.基金项目
中国空气动力研究与发展中心结冰与防除冰重点实验室开放课题(IADL20190206) （IADL20190206）
