A Study on the Improvement of Noise Suppression in a Low-Noise Valve of the Multihole Type: 2nd Report, Noise Reduction by Modifying the Exit Shape of Each Hole

Physics

• Noise Reduction 100%
• Shapes 100%
• Supersonics 66%
• Supersonic Jet Flow 66%
• Jet Flow 33%
• Flow Velocity 33%
• Low Noise 33%
• Broadband 33%
• Sound Pressure 33%
• Ratios 33%

Engineering

• Characteristics 66%
• Flow Rate 33%
• Flow Behavior 33%
• Schlieren 33%
• Sound Pressure 33%
• Pressure Ratio 33%
• Observed Flow 33%
• Noise Suppression 33%
• Diffusers 33%
• Operating Pressure 33%
• Reduction 33%