Faculty of Science and Technology
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  2. Takanobu Ogawa

Takanobu Ogawa

  (小川 隆申)

Profile Information

Affiliation
Professor, Faculty of Science and Technology Department of Science and Technology , Seikei University
Degree
(BLANK)(The University of Tokyo)
(BLANK)(Tokyo Institute of Technology)
J-GLOBAL ID
200901055183296938
researchmap Member ID
1000361406
External link

Research Interests

 2

Research Areas

 1

Research History

 8
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Education

 4

Awards

 3

Papers

 12
  • Yu Nishio, Takanobu Ogawa, Yuki Toda, Masataka Morimatsu, Ryohei Unno, Ayumu Inasawa
    Journal of Fluid Science and Technology, 17(4) 1-15, Nov, 2022  Peer-reviewed
  • Katsuya IUCHI, Yu NISHIO, Kazuhisa SETO, Takanobu OGAWA
    16(1) 161-167, Aug, 2022  Peer-reviewed
  • Tatsuma Kawachi, Takuto Sasaki, Aya Kaneko, Yu Nishio, Takanobu Ogawa
    Volume 2: Fluid Applications and Systems; Fluid Measurement and Instrumentation, Aug 10, 2021  
    <title>Abstract</title> The present study investigates the flow field in a rinsing process of a beverage can numerically and experimentally. The three-dimensional Navier-Stokes equations are solved with a finite volume method along with the volume of fluid (VOF) method for free surface. The beverage can set upside down is transported with a constant velocity and rinsed with a water jet ejected from a nozzle below the can. The case of a can at rest is also simulated. The result shows that the ejected water impinges on the can bottom and spreads along the side surface of the can. Then, as it flows down toward the can mouth, its front surface forms splashes. For the stationary can case, after the jet impinges on the can bottom, it almost evenly spreads over the side surface. The water flows downward and becomes branched flows by fingering. The time average of VOF is calculated to visualize the regions rinsed by water. For the case of a moving can, only the top region of the can is rinsed, and the ratio of the rinsed region drops to 29% from 69% for the stationary case. The computed water surfaces qualitatively agree with the experimental result, but the shape of the front surface, such as splashes and fingerings, cannot be resolved with the simulation.
  • Yu Nishio, Ryotaro Miyazaki, Takanobu Ogawa
    Volume 2: Fluid Applications and Systems; Fluid Measurement and Instrumentation, Aug 10, 2021  
    <title>Abstract</title> Micro air vehicles (MAVs) have been developed for many fields. The MAVs usually receive strong impact from a velocity change in time or space, and facilities for aerodynamic experiments of MAVs under a gusty environment have been required. The present study has developed a gust wind tunnel to generate unsteady and non-uniform flows. We developed a small wind tunnel with eight multi-fans and a shutter mechanism at the upstream of the test section. We controlled the outputs of the fans independently and obtained a linear shear layer with an error of 5 percent. The velocity gradient of the shear layer was from 5 to 8 s−1. The shutter mechanisms provided a longitudinal gust with the velocity change from 2 m/s to 10 m/s within 0.3 seconds.
  • Yu Nishio, Takanobu Ogawa, Keiji Niwa, Hirohisa Chiba
    Journal of Food Engineering, 291 110237-110237, Feb, 2021  Peer-reviewed
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Misc.

 64
  • Yu Nishio, Keiji Niwa, Takanobu Ogawa
    ASME-JSME-KSME 2019 8th Joint Fluids Engineering Conference, AJKFluids 2019, 3A-2019, 2019  Peer-reviewed
    Copyright © 2019 ASME. Motion of liquid pouring from a beverage can is numerically studied. A liquid is poured from a can which is rotated at a prescribed angular speed. The flow is simulated by solving the unsteady three-dimensional Navier-Stokes equations. An experiment under the same condition is also carried out to validate the computational result. The result shows that, when the can is tipped, the liquid flows over the lid of the can and is once obstructed by the rim of the lid. The numerical result is in good agreement with the experimental result. The effect of condensation formed on a can surface is also considered. The effect of condensation is taken into account by adjusting a contact angle. The liquid pouring from a can trickles down along the can body. The computation reproduces these experimental observations.
  • Yuki Toda, Masataka Morimatsu, Yu Nishio, Takanobu Ogawa
    ASME-JSME-KSME 2019 8th Joint Fluids Engineering Conference, AJKFluids 2019, 3A-2019, 2019  Peer-reviewed
    Copyright © 2019 ASME. A tube-type gas burner consists of a straight tube with a slit along it and discharges an air-gas mixture through the slit to produce a flame. The flow velocity from the slit depends on the pressure in the tube and the pressure loss at the slit, and it varies in the longitudinal direction of the tube. The resulting uneven flame degrades the quality of the burner. In this study, we develop a one-dimensional theoretical model of the flow in a tube with a slit. To validate the result of the theoretical model, we also conduct experiments and numerical simulations for the same flow field. We applied this theoretical model to a flow in a tube, 1 m length, 40 mm in diameter, with a slit 2.5 mm wide. The end of the tube is closed. We also discuss the effect of the length of the burner on the unevenness.
  • 小川 隆申
    日本機械学會誌, 118(1161) 452-452, Aug 5, 2015  
  • 小川 隆申
    食品と容器, 54(12) 760-765, 2013  
  • DOI Tetsuya, OGAWA Takanobu
    Transactions of the Japan Society of Mechanical Engineers. Series B., 70(700) 3082-3089, Dec 25, 2004  
    The near pressue field formed around a high speed train causes a vibration problem such as window rattling in the railside residential area. This paper investigates the near pressure field around a train using the potential theory. A train is modeled with the source distribution and the distance attenuation of the pressure field is obtained theoretically. The result shows that the pressure field away from a track only depends on the cross sectional area of a train, and that the pressure variation away from the track can not be weaken by designing the train shape.
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Books and Other Publications

 2

Professional Memberships

 3

Works

 6
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Research Projects

 11
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Industrial Property Rights

 5
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