著者

金澤 恵里 五十嵐 大貴 阿部 修 築地 徹浩 安永 和敏

出版者

一般社団法人 日本機械学会

雑誌

「運動と振動の制御」シンポジウム講演論文集 2013.13 (ISSN:24243000)

巻号頁・発行日

pp._C27-1_-_C27-10_, 2013-08-25 (Released:2017-06-19)

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Manifold blocks are recently used to connect hydraulic components in a hydraulic system that has flow channel inside. They are useful in reducing the size and weight of hydraulic systems. This paper deals with solid manifold block and laminated manifold block as trip equipment with which the turbine of a thermal power or a nuclear power plant is equipped. They are different from machining. We investigate pressure drops of their pipe flow with computational fluid dynamics (CFD) and compare the two types. We devised the new technique of having included CFD in pipeline network calculation. The final purpose is to design a laminated manifold block as trip equipment with which reduction in size and weight or reduction in pressure drops is realized. The conclusions from the aforementioned results are as follows. First, Branch/junction model can be calculated by the new technique of having included CFD in pipeline network calculation. Second, we achieved designing of a laminated manifold block as trip equipment with which reduction in size and weight or reduction in pressure drops is realized.

著者

築地 徹浩 佐倉 青蔵 永田 精一 野口 恵伸

出版者

一般社団法人 日本フルードパワーシステム学会

雑誌

日本フルードパワーシステム学会論文集 (ISSN:18803121)

巻号頁・発行日

vol.38, no.4, pp.60-64, 2007 (Released:2009-02-25)

参考文献数

7

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In the present research, our pump model is designed to visualize the jet flow near a notch of a valve plate in an axial piston pump. The cavitation cloud can be observed clearly using a high-speed video camera from the perpendicular direction to the axis and the direction of the jet flow and the area of the cavitation cloud are obtained. A valve plate with V-shaped groove type is used and the regions of the occurrence of the cavitation are analyzed using an image processing technique. Furthermore the computational fluid dynamics is employed using the 2-D vortex method combined with boundary element method to estimate the occurrence and the region of the cavitation cloud.