Affiliation of Author(s):航空学院
Journal:MODERN PHYSICS LETTERS B
Key Words:Oil-film interferometry distributed roughness elements skin friction boundary layer transition airfoil
Abstract:The influence of distributed cylinder roughness elements on boundary layer transition for NACA0012 airfoil at Ma = 0.6 has been investigated by subsonic/transonic/supersonic wind tunnel experiment with oil-film interferometry. Three different heights and two different distances of cylinder roughness elements on the airfoil model were used, and the skin friction coefficient was measured by the oil-film interferometry. The experimental results show that higher roughness elements promote the transition earlier. In addition, narrower distance of roughness elements can delay the transition compared with the case of wider distance.
ISSN No.:0217-9849
Translation or Not:no
Date of Publication:2018-10-20
Co-author:Liu, Shicheng,gxq,XT21373,Cheng, Kenning
Correspondence Author:Dong Hao
Date of Publication:2018-10-20