Extension of the Steady Flow Duration of a Ludwieg Tube Using a Reservoir-Orifice Method : Part 1. Case of Orifices with Fixed Opening Area

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概要

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• A reservoir-orifice method has been used to extend the steady flow duration of a Ludwieg tube. The unsteady expansion waves generated by the opening of a valve or a diaphragm interact with the orifice plate which separates the reservoir gas from the supply tube gas. The interaction process is investigated, and the conditions when compression, Mach, or expansion waves will be reflected from the orifice are clarified. During the interaction process above mentioned, the flow from the reservoir is necessarily choked at the orifice. Therefore, it would be impossible to reflect only Mach waves throughout the process of the interaction. The reservoir-orifice method is more effective when a quick-opening valve is employed instead of a diaphragm, and the extended flow duration amounts to about 20 to 50 percent of that of the conventional Ludwieg tube.

• 一般社団法人日本機械学会の論文

著者

• Kondoh Nobuaki

  Faculty Of Engineering Kyushu University

• Mizuma Masazumi

  Mitsui Ship Building Ltd.

• Matsuo Kazuyasu

  Faculty Of Engineering Kyushu University

• KAWAGOE Shigetoshi

  Faculty of Engineering,Kyushu University

• Kawagoe Shigetoshi

  Faculty Of Engineering Kyushu University

関連論文

• Extension of the Steady Flow Duration of a Ludwieg Tube Using a Reservoir-Orifice Method : Part 1. Case of Orifices with Fixed Opening Area
• Choking Phenomena of Flows in a Shock Tube
• The Interaction of a Reflected Shock Wave with the Contact Region in a Shock Tube
• The Interaction of a Reflected Shock Wave with the Boundary Layer in a Shock Tube
• Investigations of the Aerodynamic Characteristics of the Shock Tubes : Part 3 Transient Flow in Converging-Diverging Nozzles
• Oscillation Phenomena of Pseudo-Shock Waves
• The Mechanism of Pseudo-Shock Waves
• Investigations of the Aerodynamic Characteristics of the Shock Tubes : (Part 2,On the Formation of Shock Waves)
• Fast-Acting Valves for Use in Shock Tubes : Part 2, Formation of shock waves
• Fast-Acting Valves for Use in Shock Tubes : Part 1, Construction and their characteristics
• Investigations of the Aerodynamic Characteristics of the Shock Tubes : (Part 1,The Effects of Tube Diameter on the Tube Performance)
• Extension of the Steady Flow Duration of a Ludwieg Tube Using a Reservoir-orifice Method : Part11, Case of Orifices with Variable Opening Area
• Investigations of the Aerodynamic Characteristics of the Shock Tubes : Part 4, Aerodynamic Characteristics of Laval Nozzles Installed in a Shock Tube

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