西华大学学报（自然科学版）2024，Vol.43Issue(2)：10-17,8.DOI:10.12198/j.issn.1673-159X.5217
低速湍流边界层DBD控制机制
Flow Control Mechanism of DBD on Low-speed Turbulent Boundary Layer
王浩宇 1孙志坤 1耿玺 1史志伟 1程克明 1吴继飞2
作者信息
- 1. 南京航空航天大学航空学院,江苏南京 210016||非定常空气动力学与流动控制工业和信息化部重点实验室,江苏南京 210016
- 2. 中国空气动力研究与发展中心高速所,四川绵阳 622762
- 折叠
摘要
Abstract
Dielectric barrier discharge(DBD)actuator has the advantages of light weight,no moving parts,ease of use,and quick response,and have received extensive attention in flow control applications.Plasma turbulent boundary layer drag reduction is one of the many applications of DBD flow control,and the DBD turbulence drag reduction mechanism needs to be further explored.The effect of plasma actuator on the skin-frictional drag of turbulent boundary layer on a flat plate was investigated experimentally at an incoming velocity of 10 m/s.The oil film interferometry was used to measure the change of skin-friction,and the hot wire anemometer and particle image velocimetry(PIV)were used to obtain the velocity distri-bution in the boundary layer.The results indicate that under the action of the plasma actuator,the measured skin-friction coefficient decreases.Plasma excitation suppresses the development of coherent structures by reducing the velocity of the boundary layer buffer and the logarithmic region,reducing the Reynolds stress as well as the magnitude of the turbulent kinetic energy,which results in drag reduction.关键词
流动控制/湍流边界层/平板/等离子体激励器/减阻Key words
flow control/turbulent boundary layer/flat plate/plasma actuator/drag reduction分类
航空航天引用本文复制引用
王浩宇,孙志坤,耿玺,史志伟,程克明,吴继飞..低速湍流边界层DBD控制机制[J].西华大学学报（自然科学版）,2024,43(2):10-17,8.
