PASSIVE NOISE CONTROL OF A BURNER-COMBUSTOR SYSTEM OF A TURBO-FAN ENGINE

للكاتبين :

1-A.EL.BADAWY 2- W.EL.ARNA'OUTY

Department Of Mechaincal Engineering

Al Azhar University, Cairo, Egypt

ABSTRACT:

The application of the Herschel-Quincke (HQ) tube concept as a noise reduction device is

employed to reduce the noise of an industrial burner-combustor test rig. A computational

technique is developed to design the HQ tube dimensions to control the sound field in such

system. Transmission loss predictions from the analytical model are shown to correlate well

with experimental data acquired from an extended impedance tube setup, as well as the real

test rig. In addition, the frequencies at which maximum attenuation will occur are

determined.

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