Abstract
The heat exchanger structure in power plants can be treated as two-dimensional phononic crystals. The aim of this paper is to show the sound transmission characteristics through the heat exchanger. The plane wave expansion method is presented to compute the band gaps of the tube arrays which are composed of square or rectangular lattices of solid cylinders in the air matrix. By using the Matlab and Comsol software, and setting the pitch and diameter parameters of the tube arrays and the temperature of circumstance, the sound band-gap diagram and the impact of the sound transmission are got to understand the acoustic signal processing in power station boilers. In simulation, two-dimensional pressure acoustics Application Mode (acpr) is chosen, and finite difference method is used to divide the grid. For the sound vertically incident upon the tube arrays, we can get that the experimental results can be matched with the numerical results quite well. The results obtained through experiments and calculations can tell us that the band gaps are associated with the structure and the temperature. The study can provide new idea and method on theory and application of sound propagation in power station boilers.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
