Analysis of the Photoacoustic Helmholtz Resonator with Conical-Ended Duct
Abstract
Q-factor of photoacoustic Helmholtz cells can be improved by modification of the duct ends. The paper describes how mechanical modification of the duct ends affects the photoacoustic Helmholtz resonator. The cone profile of the duct ends was studied and, according to previous work, the linear modification of the cone parameter does not result in a linear increase of the resonator Q-factor and resonance frequency. The influence of the conical modification, cone length and angle was investigated using the computer simulations based on the stepped-approximated model.References
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