Search Results 1-20 of 1475

  • FORMULA ON ENERGY LOSSES AT FOUR-WAY CIRCULAR MANHOLE UNDER SURCHARGE FLOW  [in Japanese]

    ARAO Shinji , HIRATSUKA Shunsuke , KUSUDA Tetsuya

    <p> 内水氾濫計算をより正確に実行するには,雨水管や合流管の接合部であるマンホールで生じるエネルギー損失を考慮する必要がある.流入管が1本あるいは2本と流出管が接合する2方向と3方向接合円形落差マンホールにおけるエネルギー損失係数に関して,著者らは定式化を図ってきた.しかし,十字路交差点下で3本の流入管が接合する4方向接合マンホールに関しては,研究例が非常に少ない.そこで本論文では, …

    Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 75(1), 49-60, 2019

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  • Spreadsheet Solutions for Rheological Properties and Viscoplastic Fluid Flow in Circular Pipes and in Parallel-plates  [in Japanese]

    HATAKEYAMA Nobuo , SHIMIZU Yoshiyuki , MASUYAMA Tadashi

    … The rheological coefficients of these models are obtained by using measurement results of the rotational viscometer or experimental results of the flow in a circular pipe, and the pressure loss in pipe flows is obtained from these rheological coefficients. … In the field of well drilling, the flow in a concentric annulus with a relatively large pipe diameter ratio is approximated by the flow in a parallelplate, so it is also necessary to consider the flow in a parallel-plate. …

    Journal of MMIJ 135(2), 15-24, 2019

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  • Identification of dimensions of circular pipe "Suikinkutsu" using "Suikinon"  [in Japanese]

    藤田 佑樹 , 水谷 孝一 , 若槻 尚斗 , 海老原 格

    音楽音響研究会資料 37(5), 13-18, 2018-08-25

  • ESTABLISHMENT OF EXPERIMENTAL METHOD FOR MEASUREMENT OF FLOW RATE OF AIR IN CIRCULAR PIPE  [in Japanese]

    中島 潤二 , 山川 和志 , 儀保 力

    西日本工業大学紀要 = Memoirs of Nishinippon Institute of Technology 48, 123-131, 2018

  • Influence of Curvature of Ejecting Surface on Jet from Circular Pipe Side  [in Japanese]

    HIRAMOTO Riho , TOYODA Kuniaki , OTAKE Hideo

    The Proceedings of Conference of Hokkaido Branch 2018.56(0), 121, 2018

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  • Diffusion characteristics of jet from the side of circular pipe  [in Japanese]

    HIRAMOTO Riho , 豊田 国昭 , 大竹 秀雄

    … <p>Velocity fields of air circular jets issued from circular holes arrayed in a line on a flat plate and a half round tube were investigated experimentally with a central focus on the effect of curved surface with the circular holes exist. … The circular holes were arrayed at regular intervals in a line, and ratios of the interval s to the jet exit diameter <i>d</i> …

    The Proceedings of the Fluids engineering conference 2018(0), OS5-18, 2018

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  • Influence of an Applied Magnetic Field on Resistance Force of a Magneto-Rheological Fluid in a Pipe with a Tapered Pin  [in Japanese]

    MATSUZAKA Kojiro , SAWADA Tatsuo

    … <p>We carry out theoretical and experimental study for the resistance force of MR fluid flow in a circular pipe. …

    The Proceedings of the Fluids engineering conference 2018(0), OS12-4, 2018

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  • A Study on effects of the shape and arrangement of Dimples on Heat Transfer performance  [in Japanese]

    AKAIKE Satoshi , HONDA Itsuro , KAWANAMI Osamu

    … So, in this study, for establishing an optimum design method for dimples at a low cost, numerical thermal flow analysis by in-house code is carried out and investigation was conducted on the influence of the dimples inside the pipe on the flow structure and heat transfer characteristics. … As a result, elliptical shaped dimple did not result in favorable results compared with the circular shaped dimple. …

    The Proceedings of the Fluids engineering conference 2018(0), OS15-10, 2018

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  • Effect of addition of graphene oxide nanoparticle on thermal flow characteristics in circular pipe  [in Japanese]

    Mitomi Takahiro , Ogata Satoshi , Nishina Yuta , Tochigi Hiroshi , Watanabe Keizo

    … <p>Pressure drop and heat transfer characteristics of graphene oxide nanoparticle suspensions in circular pipe flow were investigated. … It was found that the graphene oxide nanoparticle suspensions not only reduce the pressure drop but also increase the heat transfer in a circular pipe flow.</p> …

    The Proceedings of the Fluids engineering conference 2018(0), OS1-6, 2018

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  • A Simple Method of the Load Factor Using a Circular Plate Theory for Bolted Pipe Flange Connections with Gaskets under Internal Pressure  [in Japanese]

    SAWA Toshiyuki , Mabuchi Toshio , SATO Koji

    The Proceedings of Yamanashi District Conference 2018(0), YC2018-077, 2018

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  • Investigation of Friction Welding Conditions and Thickness of Friction Welded Pipe Joint between A5052 and SUS304  [in Japanese]

    NAKAMURA Junki , KIMURA Masaaki , KUSAKA Masahiro , KAIZU Koichi

    … Friction welding method was applied to improve the productivity in manufacturing for a dissimilar pipe joint. … In this research, a joining experiment for using a circular pipe of A5052 Al alloy and SUS304 stainless steel was conducted and the effects of the welding condition on the joining phenomena and the joint strength were investigated. …

    The Proceedings of The Manufacturing & Machine Tool Conference 2018.12(0), D20, 2018

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  • Heat Transfer Performance of Water Flow in Porous Copper Pipes Fabricated by Explosive Welding Technique  [in Japanese]

    Abe Yuki , Yuki Kazuhisa , Sato Yoshiaki , Kibushi Risako , Unno Noriyuki , Hokamoto Kazuyuki , Tanaka Shigeru , Tomimura Toshio

    … Experiments with a double-pipe heat exchanger are conducted with four porous copper pipes having different porosities and pore diameters to evaluate the heat transfer performance in a water flow. … The results show that the heat transfer coefficient is much higher than that of a circular pipe flow especially in the low flow velocity regime and is 2.5 times at the maximum. …

    The Proceedings of the Thermal Engineering Conference 2018(0), 0175, 2018

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  • Study on Liquid Film Formed with Liquid Column Oscillation in Pulsating Heat Pipe:(Case of Vertical Pipe)  [in Japanese]

    Miura Masayoshi , Arai Haruki , Ito Hiroyuki

    … A vertically located circular glass tube with an inner diameter of 2 mm was used as the test channel. … The experimental results were compared to those in the horizontal pipe. …

    The Proceedings of the Thermal Engineering Conference 2018(0), 0024, 2018

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  • Heat Transfer Characteristics of Graphene Oxide Suspensions in a Circular Pipe  [in Japanese]

    OGATA Satoshi , YAMAMOTO Kohei , NISHINA Yuta , TOCHIGI Hiroshi , WATANABE Keizo

    The Proceedings of Mechanical Engineering Congress, Japan 2018(0), S0530202, 2018

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  • The effects of channel diameter and of the liquid physical properties on the gas-liquid two-phase flow in microchannels  [in Japanese]

    SHIMMURA Takanori , OTAKA Takeshi , KINOSHITA Eiji , IDE Hideo

    … <p>In this work, the effects of pipe diameter and liquid Physical properties in flow patterns map in a horizontal circular microchannel with an inner diameter of about 150, 250, 530 μm have been investigated by using a high speed camera. … In flow pattern maps, influence of pipe diameter and liquid Physical properties was observed. …

    The Proceedings of Mechanical Engineering Congress, Japan 2018(0), J0530103, 2018

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  • Heat transfer Enhancement of Triple Tube Type Heat Exchanger by Petal Shaped Tube  [in Japanese]

    SHAKOUCHI Toshihiko , YAMAMURA Kazuma , TSUJIMOTO Koichi , ANDO Toshitake

    … The conventional circular double tube type heat exchanger, CP-tube, is one of the compact one with a high heat transfer performance. … The authors discussed the heat transfer performance of double tube type heat exchanger (pipe outer diameter: 22.0 [mm], pipe length: 2.4 [m]) with petal shaped special inner tube having a large wet perimeter. …

    The Proceedings of Mechanical Engineering Congress, Japan 2018(0), J0520401, 2018

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  • Theoretical Model of a Flow in a Tube-type Gas Burner  [in Japanese]

    MORIMATSU Masataka , HARA Kengo , OGAWA Takanobu

    <p>In a tube-type gas burner, which is commonly used in a baking process, the pressure in the burner tube decreases by friction loss, but the outflow from the nozzle along the burner tube decele …

    The Proceedings of Mechanical Engineering Congress, Japan 2018(0), G0500403, 2018

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  • Buckling strength and opening area of GPI standard screen pipe  [in Japanese]

    NISHINO Yoshinori , UHARA Masaki , TAMURA Shinichi

    … The screen pipe with slit hole in the axial or circumferential direction or with large number of circular holes is used in oil drilling. … Strength reduction against external pressure (axial buckling, circumferential crushing) to M grade pipe with axial slit hole was minimized, is optimum to be a standard for GPI standard screen pipe. …

    GPI Journal 1(1), 49-52, 2018

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  • Buckling strength and opening area of GPI standard screen pipe

    NISHINO Yoshinori , UHARA Masaki , TAMURA Shinichi

    … The screen pipe with slit hole in the axial or circumferential direction or with large number of circular holes is used in oil drilling. … Strength reduction against external pressure (axial buckling, circumferential crushing) to M grade pipe with axial slit hole was minimized, is optimum to be a standard for GPI standard screen pipe. …

    GPI Journal 1(1), 53-56, 2018

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  • Total Laparoscopic Hysterectomy for Uterine Cervical Myoma  [in Japanese]

    Yamamoto Noriko , Kobori Hiroyuki , Kumakiri Yuko , Hagiwara Tomoko , Kato Noriko , Murakami Keisuke , Kitade Mari

    … To lift the uterus, we used Vagi pipe<sup>®</sup> … and pulled the circular ligament and the cervical myoma with a Myoma Borer. … On peeling off the bladder or making an incision on the vaginal wall we confirmed the vaginal fornix by Vagi pipe<sup>®</sup> … and sonde inserted through the Vagi pipe<sup>®</sup> …

    JAPANESE JOURNAL OF GYNECOLOGIC AND OBSTETRIC ENDOSCOPY 34(2), 165-170, 2018

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