2703 三次元ファン表面の微小変動圧の計測のための基礎研究(J20-1 流体関連の騒音と振動(1) ファン騒音,ジョイントセッション,21世紀地球環境革命の機械工学:人・マイクロナノ・エネルギー・環境)

概要

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The present study is a fundamental approach to develop the measuring technology for minute fluctuating pressures on the 3D blade surface of a fan rotating with arbitrary rotation-axis direction, where we are required to correct the gravitational-force effect and the centrifugal-force effect for accurate measurements. The working fluid is air. A rotating pressure transducer with an arbitrary attitude is closely sealed by a shroud. The rotational motions with arbitrary attitudes are realised by fixing the pressure transducer to a cantilever which is rotates with a motor-driven disc with a diameter of 500[mm] and a thickness of 5[mm]. As a result, we have successfully estimated both the effects on the pressure-transducer signal.
2008-08-02