论文和技术资料

This work presents acoustic attenuation performance of helicoidal resonator due to distance change from different cross-sectional elements of cylindrical duct. The helicoidal resonator properties are described mainly in in infinite long cylindrical duct. For practical applications it is important to know the limits of use of this solution. This paper describes how the helicoidal resonator should be placed inside acoustic systems and what distance from different cross-sectional elements (silencers, empty chambers, duct ends etc.) should be satisfied for its proper work.