FLOW OF THE ENTRANCE REGION IN A POROUS PIPE : 3RD REPORT : TRANSIENT FLOW

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概要

• 論文の詳細を見る

• This study deals with a transient laminar flow, which is started from rest, in the entrance region of a porous pipe. This flow analysis is applied to transpiration cooling systems and research equipment for production of tidal current. In this report, the problem is analyzed by a modified momentum integral method using the integral form of the equations of continuity, momentum and energy. The following conclusions were obtained ; (1) Dynamic distributions of velocity profiles, wall frictions and pressures are obtained numerically. (2) The relation between the flow rate of injection or suction and inlet length of the entrance resion is made clear. (3) Each dynamic state in the pipe is found with changeable inlet velocities and with variable suctions or injections. (4) It is confirmed that the modified momentum integral method is valid for the slip velocity on the porous wall which makes the inlet length short.

• 一般社団法人日本機械学会の論文

著者

• Kawai Hideki

  静岡大学電子工学研究所

• Ando Tsuneyo

  Faculty Of Science And Technology Keio University

• Ando Tsuneyo

  Faculty Of Engineering Keio University

• Ando Tsuneyo

  Fac. Of Sci. And Tech. Keio Univ.

• Kawai Hideki

  Department Of Thoracic Surgery Akita Red Cross Hospital

• Tanahashi Takahiko

  Faculty Of Science And Technology Keio University

• Sawada Tetsuo

  Faculty Of Science And Technology Keio University

• Sawada Tatsuo

  Department Of Mechanical Engineering Keio University

• MASUZAWA Jun

  Mitsubishi Heavy Industry

• Kawai Hideki

  Department Of Dental Materials Science School Of Dentistry Aichi-gakuin University

• Tanahashi Takahiko

  Faculty Of Engineering Keio University

• Sawada Tatsuo

  Fac. Of Sci. And Tech. Keio Univ.

• Kawai Hideki

  Department Of Cardiology Fujita Health University School Of Medicine

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