Measurements of Minute Unsteady Pressure on Three-Dimensional Fan with Arbitrary Axis Direction
The present study is a fundamental approach to develop the measuring technology for minute fluctuating pressures on the three-dimensional blade surfaces of the fan which rotates with an arbitrary rotation-axis direction. In this situation, we are required to correct the centrifugal-force effect, the...
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Veröffentlicht in: | International journal of fluid machinery and systems 2010, Vol.3 (1), p.1-10 |
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Hauptverfasser: | , , , , , |
Format: | Artikel |
Sprache: | kor |
Online-Zugang: | Volltext |
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Zusammenfassung: | The present study is a fundamental approach to develop the measuring technology for minute fluctuating pressures on the three-dimensional blade surfaces of the fan which rotates with an arbitrary rotation-axis direction. In this situation, we are required to correct the centrifugal-force effect, the gravitational-force effect and the other leading-error effects for accurate measurements of the minute pressures. The working fluid is air. A pressure transducer rotating with an arbitrary attitude is closely sealed by a twofold shroud system. The rotational motion with an arbitrary attitude is produced by fixing the pressure transducer to the cantilever which is connected to a motor-driven disc of 500mm in diameter and 5mm in thickness. As a result, we have quantitatively determined main governing effects upon the non-effective component of the pressure-transducer signal. |
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ISSN: | 1882-9554 |