Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : September 03, 2023 - September 06, 2023
In turbomachinery, such as gas turbine engines, a region of velocity deficit called wake is generated from the trailing edges of blade rows and periodically passes through the downstream blade rows. When the wake passes over the blade surface it interferes with the boundary layer and the flow around the blade is subjected to various aerodynamic and heat transfer effects. This study experimentally reproduces the unsteady flow field inside a turbine with a periodic wake passing over the blade surface. We have designed and fabricated a small blowout wind tunnel, a wake generator, and a simple model of a flat plate blade. The characteristics of the wake are generated by the moving bars setting of the wake generator. Flow is visualized using the smoke wire method and unsteady velocity is measured using a hot-wire anemometer.
