Numerical investigation on an array of Helmholtz resonators for the reduction of micro-pressure waves in modern and future high-speed rail tunnel systems

• Published in: Journal of sound and vibration Vol. 400; pp. 606 - 625
• Main Authors: Tebbutt, J.A., Vahdati, M., Carolan, D., Dear, J.P.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier Ltd 21.07.2017; Elsevier Science Ltd
• Subjects: Acoustics; Arrays; Background noise; Design optimization; Elastic waves; Genetic algorithms; Geometric constraints; Helmholtz equations; Helmholtz resonators; High speed rail; Mathematical models; Micro-pressure waves; Multiple objective analysis; Non-linear acoustics; Nonlinear systems; Optimization; Railway tunnels; Shock waves; Shock-capturing schemes; Sound propagation; Sound waves; Train-tunnel aero-acoustics; Tunnels; Vibration analysis; Wave propagation; Micro-pressure waves; Non-linear acoustics; Shock-capturing schemes; Train-tunnel aero-acoustics; Optimization

Previous research has proposed that an array of Helmholtz resonators may be an effective method for suppressing the propagation of pressure and sound waves, generated by a high-speed train entering and moving in a tunnel. The array can be used to counteract environmental noise from tunnel portals an...