Unsteady Pressure Fluctuations in an Inducer
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概要
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In this investigation, pressure fluctuations in an inducer were observed in order to examine the characteristics of unsteady cavitation at lower cavitation coefficients. From the spectrum analysis, it was confirmed that the pressure fluctuations occurred with the frequency of 0.6×ω_s (ω_s, shaft rotational frequency), 1.0×ω_s, 1.1〜1.3×ω_s and also 2.1×ω_s. The 0.6×ω_s was caused by the rotating phenomena in an inducer rotational direction. The 1.1〜1.3×ω_s was caused by the super-synchronous rotating cavitation. The 2.1×ω_s was caused by rotating cavitation in the counter direction. In addition, the amount of head reduction of the inducer caused by the synchronous cavitation (1.0×ω_s) depended on the cavity pattern of the blades.
- 一般社団法人日本機械学会の論文
- 2006-08-15
著者
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Nakamura Noriaki
Japan Technology And Science Agency Tokyo Headquarters (science Plaza)
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Hashimoto Tomoyuki
Turbopump Section Institute Of Aerospace Technology Japan Aerospace Exploration Agency
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SHIMAGAKI Mitsuru
Turbopump Section, Institute of Aerospace Technology, Japan Aerospace Exploration Agency
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WATANABE Mitsuo
Turbopump Section, Institute of Aerospace Technology, Japan Aerospace Exploration Agency
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HASEGAWA Satoshi
Turbopump Section, Institute of Aerospace Technology, Japan Aerospace Exploration Agency
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SHIMURA Takashi
Turbopump Section, Institute of Aerospace Technology, Japan Aerospace Exploration Agency
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Shimura Takashi
Turbopump Section Institute Of Aerospace Technology Japan Aerospace Exploration Agency
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Shimagaki Mitsuru
Turbopump Section Institute Of Aerospace Technology Japan Aerospace Exploration Agency
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Watanabe Mitsuo
Turbopump Section Institute Of Aerospace Technology Japan Aerospace Exploration Agency
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Hasegawa Satoshi
Turbopump Section Institute Of Aerospace Technology Japan Aerospace Exploration Agency