Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : November 29, 2018 - November 30, 2018
Recently, it has been a problem of aerodynamic noise radiated from airfoils. Therefore, the authors made wind tunnel tests to measure airfoil noise and static pressure on an airfoil (NACA0012 model) in turbulent flow. In additon, the authors made Large Eddy Simulation to simulate vorticity distributions around airfoil and airfoil noise. In this study, the authors use an airfoil and a cylinder to examine influences of vortices with a particular size and fluctuation. Then, the authors measured and simulated airfoil noise and static pressure in varying position in the vertical direction (-10 to +10 mm) of the cylinder placed in the upstream side of the airfoil to change interference position. As a result, it has become clear that airfoil nose is increased when interference position is in the stagnation point. And the airfoil has larger pressure fluctuation at leading edge in this case.
