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您的检索式：作者名="TsukijiTetsuhiro"
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| 1 | Numerical investigation of cavitating flow behind the cone of a poppet valve in water hydraulic system显示文摘Computational Fluid Dynarmics(CFD) simulations of cavitating flow throuth water hydraulic poppet valves were performed using advanced RNG κ-epsilon turbulence model. The flow was turbulent, incom-pressible and unsteady, for Reynolds nurnbers greater than 43 000.The working fluid was water, and the structure of the valve was simplified as a two dimensionl axisynmmetric gecomtrical model. Flow Field vlsual-ization was numerically achieved. The effects of inlet velocity, outlet pressure, opening size as wall as popet angle on cavitation intensity in the poppet valve were numerically investigated. Experimentall flow visualization was coonducted to capture cavitation images near the orifice in the poppet valve with 30° poppet angle using high speed video camera.The binary cavitafing flow field distrilxrdon obtalned frcra digital processing of the original cavitation image showed a gtxxt agreement with the ntmaerieal | 高红 傅新 杨华勇 TSUKIJITetsuhiro | 2002 | Journal of Zhejiang University Science2002，3，4： | 24 |
| 2 | SUPPRESSION OF A CAVITATION NEAR THE ORIFICE OF A RELIEF VALVE显示文摘The aim of this study is to suppress a cavitation near the orifice of a relief valve by changing the shape of a poppet. An experimental flow visualization technique and a numerical cavitating flow simulation, using a RNG k-ε turbulence model and a cavitation model, are employed to achieve the purpose. In the flow visualization, the cavitation phenomenon near the orifice of a relief valve is observed using a transparent test valve body model and a camera. On the other hand, a three dimensional cavitating flow simulation is conducted to predict the cavitation near the orifice of a relief valve.Six types of poppets are designed by changing the shape of a traditional poppet shape, which is expected to influence the cavitating flow in an orifice. In addition, the cavitation noise of a relief valve is measured and the noise spectrum is analyzed. In conclusion, the cavitation intensity and the cavitation noise are reduced for an optimal poppet geometry obtained in the present study. | GaoHong LinWanlai FuXin YangHuayong TsukijiTetsuhiro | 2005 | Chinese Journal of Mechanical Engineering2005，18，1： | 7 |
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