空気噴流を用いた壁面付着微粒子除去装置におけるノズル内部構造の検討

抄録

In this study, optimal nozzle shape for a cleaning device to removes micro-meter sized particles is considered. This device ejects high-speed air jet into a solid surface and removes the particles adhering the surface. To improve removal performance, it has a nozzle containing a triangular cavity inducing high turbulence. It is important to select optimal nozzle shape to give high removal performance and reduce nozzle manufacturing cost. For the optimal selection, we propose new nozzle shapes with inverted triangular cavity and estimate the removal performance by numerical analysis. The analysis indicates comparable removal moment between conventional nozzle shape and the new shape. The new shape has great advantage in reducing nozzle manufacturing cost.