Investigation on leading edge receptivity to freestream vortical disturbances

2015 Fiscal Year Final Research Report

• Project/Area Number: 25420104
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Fluid engineering
• Research Institution: Tohoku University
• Principal Investigator: Izawa Seiichiro 東北大学, 工学(系)研究科(研究院), 准教授 (90333856)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 前縁部受容性 / 境界層遷移 / 渦度撹乱

Outline of Final Research Achievements

Receptivity process of artificially generated disturbances in the freestream was investigated experimentally and numerically. As a result, it was shown that the velocity fluctuations inside a boundary layer are amplified when the external disturbances have a strong peak outside the boundary layer. It was also shown that the vorticity fluctuations supplied from the wall at the leading edge and at the junction contribute to the generation of vorticity fluctuations inside the boundary layer and cancel each other in the downstream region.

Free Research Field

流体工学