Investigations of Transonic Ludwieg Tubes : 4th Report, Effects of Flow Mach Number in Supply Tube on Starting Process of Test Section

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概要

• 論文の詳細を見る

• The stagnation state of a flow induced by unsteady expansion waves is dependent on the strength of the expansion waves. Therefore, even if the initial condition in the supply tube of a Ludwieg tube is the same, the stagnation stage of the flow in the test section varies with Mach number of the flow in the supply tube. In the present paper, the starting process of a transonic Ludwieg tube with a quick-opening valve upstream of the test section was experimentally investigated over a range of the throat areas of the nozzle which is uniquely related to Mach number of the flow in the supply tube. Based on the results of the pressure measurements, wave diagrams showing the starting process were presented, and the effects of Mach number of the flow in the supply tube on the starting process were clarified with consideration of the flow rate in the plenum chamber.

• 一般社団法人日本機械学会の論文

著者

• MATSUO Kazuyasu

  Graduate School of Engineering, Sciences, Kyushu University

• KAWAGOE Shigetoshi

  Graduate School of Engineering Sciences, Kyushu University

• Nagatake Minoru

  Faculty Of Engineering Oita University

• Matsuo Kazuyasu

  Graduate School Of Eng. Sciences Kyushu University

• KAGE Kazuyuki

  Faculty of Engineering, Oita University

• KANDA Tsuyoshi

  Showa Denko

• Kage Kazuyuki

  Faculty Of Engineering Oita University

• KAWAGOE Sigetoshi

  Kyushu University

• Kawagoe Shigetoshi

  Graduate School Of Engineering Sciences Kyushu University

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