Researching of the reduction of shock waves intensivity in the "pseudo boiling" layer

This article applies to the field of acoustics and deals with noise reduction of pulsating combustion chambers, in particular the reduction of the shock waves' intensity with the help of pseudo boiling layer. In the course of work on a test stand that included a pulsator, a compressor with the...

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Bibliographic Details
Published in:Journal of physics. Conference series 2017-09, Vol.899 (4), p.42007
Main Authors: Pavlov, G I, Telyashov, D A, Kochergin, A V, Nakoryakov, P V, Sukhovaya, E A
Format: Article
Language:English
Subjects:
Acoustic noise
Acoustics
Boiling
Combustion chambers
Fluidizing
Gas jets
Gas streams
Granular materials
Noise reduction
Physics
Pressure dependence
Shock waves
Sound pressure
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Summary:This article applies to the field of acoustics and deals with noise reduction of pulsating combustion chambers, in particular the reduction of the shock waves' intensity with the help of pseudo boiling layer. In the course of work on a test stand that included a pulsator, a compressor with the receiver and a high pressure fan was simulated gas jet flowing from the chamber pulsating combustion and studied the effect of different types of fluidization on effect of reducing the sound pressure levels. Were obtained the experimental dependence of the sound pressure levels from parameters such as: height of the layer of granules; diameter of the used granules; amplitude of the pressure pulsations in the gas stream at the entrance to the camera; frequency of pressure pulsations. Based on the results of the study, it was concluded that the using of a pseudo boiling layer is promising for reducing shock wave noise.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/899/4/042007