Aerodynamic Study on Noise and Vibration Generated in High Pressure Gas Valves : Part 3 : Noise and Vibration Induced by Internal Oscillating Flows in Conical Plug-Circular Chest Valves
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概要
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Some effects of valve chest on noise and vibrations generated in a test valve are investigated experimentally and theoretically in close relation to flow patterns of internal supersonic air flow and acoustic modes in the valve chest. The test valve consists of a conical plug, a plane seat and a circular chest, and high pressure air is discharged into atmosphere through the valve. The experimental pressure ratio is less than twenty. It is found that the valve chest significantly affects the internal flow, and so noise and vibrations characterized by it are generated. At a relatively large lift and a high pressure ratio, the levels of noise and vibrations increase significantly. This increase is caused by an oscillating conical flow which can be controlled by the characteristics of the valve chest-resonator for certain flow conditions and the geometries. At a relatively small lift, a bending vibration of valve stem is induced by an unstable flow in transition of flow patterns.
- 一般社団法人日本機械学会の論文
著者
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TAJIMA Kiyohiro
School of Science and Engineering, Waseda University
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Tajima Kiyohiro
School Of Science And Engineering Waseda University
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Nakano Masami
Faculty Of Engineering Yamagata University
関連論文
- Aerodynamic Study on Noise and Vibration Generated in High Pressure Gas Valves : Part 2 : Fluid Thrust related to Flow Patterns of Supersonic Air Flow discharged through Conical Valve Plugs into Atmosphere
- Aerodynamic Study on Noise and Vibration generated in High Pressure Gas Valves : Part 1, Flow Patterns and Noise of Supersonic Air Flow discharged through Conical Valve Plugs into Atmosphere
- Some Investigations of Shock Tube Flow : On the Propagation Behavior of the Initial Shock Front
- Aerodynamic Study on Noise and Vibration Generated in High Pressure Gas Valves : Part 3 : Noise and Vibration Induced by Internal Oscillating Flows in Conical Plug-Circular Chest Valves
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