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My recent topics and interests, Episode 3


(by S. Miyauchi, Professional Engineer, Doctor of Engineering, JSME Fellow)

About joint research with Tsinghua University, and two excellent professors

The study of pressure fluctuation in guide vane of a mixed flow pump is done by joint research of Kubota Corp. and Tsinghua Univ. from March, 2012 to March, 2014. As for the guide vane, due to the distortion caused by Jet-Wake flow from the impeller and rotor-stator interaction, the flow unsteadiness causes problems of vibration. Because guide vane is narrow and complicated three-dimensional shape, it is difficult to measure the pressure. The technology of stereolithographic model with plenty fine pressure pipes was used to manufacture a guide vane by Tokyo Fluid Research Co. ( And accurate and sensitive multipoint simultaneous measurements with high spatial and temporal resolution were done. Next, using various statistical analyses including higher order statistics (skewness S and kurtosis K), the characteristics of the measured pressure is examined (See the

attached file "Measurement of Pressure Fluctuation in Guide Vane of a Mixed flow Pump") . At that time, I studied with two professors, Zhu Bao-shan(祝宝山)and Luo Xian-wu(羅先武). Because of the professors of Tsinghua that is competing "the world's top institute of technology" with Caltech, they are very excellent. Prof. Zhu often study hydraulic turbine collaborating with Harbin Electric Machinery Co.. Prof. Luo is vigorously studying cavitation.





宮内 直(技術士、工学博士、機械学会フェロー) 地方公立名門高校の卒業生は人間力と好奇心・地頭が強く伸び代が大。率直で元気で挑戦的、ストレス・逆境に強く、様々の境遇の仕事相手の懐へ初対面でも飛込む。また地方の親達は「子供は何とか国立大学へ」と懸命に働き、子供もその感謝で社会に出て勤勉なので企業に人気。地方創生が最近よく話題になるが、明治の近代化から戦後復興・高度成長は、江戸時代の全264藩(領邦)


Jay Shafer's Stunning $5,000 Tiny House 3,025,516 回視聴 •2018/11/09 那須塩原市 上物作っていきます。前編#ミニ小屋作り#小屋暮らしとDIY 【土地開拓】#2 伐

駆け抜けし 昭和の星(スター)ら 浄土へと

人間、「はい、ここまで」という日は来る。 突然来る(交通事故など)。 一定期間の予告をもって来る場合もある(癌の告知後数か月から数年など。)。 病床に2、3日臥せれば、あっという間の身体の衰えを意識する。 身体、頭、目、手、足を動かしての命である。 「はいここまで」が来るまで、毎日、身体、頭、目、手、足を動かすことだ。 それは試験の1時間と同じだ。一生は試験の1時間だ。 「はいここまで」と言われる


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