Leakage Effect on the Transmission Properties of a Duct Loaded with a Helmholtz Resonator

The characteristics of transmitted acoustic field have important significance to the leakage detection and metasurface technology. When additional leak holes are present, conventional single neck Helmholtz resonator will naturally become one with multiple necks. Based on such a background, in this paper, effects leakages transmission properties Duct Resonator (DHR) device is investigated both analytically numerically. A set closed-form formulas derived predict spectra DHR leakages. theoretical results compared COMSOL predictions. simulation show that number width significant influences amplitude, phase shift wave, resonance frequency system.