WSEAS Transactions on Fluid Mechanics
Print ISSN: 1790-5087, E-ISSN: 2224-347X
Volume 12, 2017
Noise Suppression of Exhausted Air Flow at the Tube Outlet
Authors: , ,
Abstract: This feasibility study deals with use of flow numerical simulation for effectivity prediction of various designs of noise silencer, applied on the air exhaust of large volume flow and complicated by sticky parts contained in exhausted air. Important noise source are here thin metallic walls, excited by pressure pulsations of turbulent flow and a strong free flow with turbulent outer boundary, directed up in the free surroundings. The results demonstrate that several simple modifications decrease the flow kinetic energy at one quarter approx. of the actual value, therefore a specific noise level decreasing can be expected, too.