The role of nozzle exit-lip surface roughness on jet noise

JKK Alapati - INTER-NOISE and NOISE-CON Congress and …, 2023 - ingentaconnect.com
This paper attempts to describe the jet noise sensitivity to the surroundings by considering
the surface roughness of the nozzle exit lip. A thick lip convergent nozzle is used, and its lip …

Effects of Porous Parameters on the Aerodynamic Noise of the Blowing Device of Guardrails

MH Zhang, HJ Shi - Journal of Applied Fluid Mechanics, 2022 - jafmonline.net
To solve the problem of the strong noise generated in the galvanizing process on the
surface of the guardrail board, optimal design of the outlet structure of the blowing device is …