Method: Green's function for a point/ring source located in the fluid layer or soil layers/half-space
Modelling parts: wave propagation in the acousto-elastic layered half-space
Description: EJP complex wavenumber integration model can be used for the sound propagation model for a source in the fluid or in the soil. The solution is based on the summation of a finite number of modes with Ewing-Jardetsky-Press (EJP) branch line integration. This model can be easily adopted as a propagation model coupled to finite element or semi-analytical models through Boundary Element method.
The geometry of the model.
Examples: An example calculation for a point source and problem geometry are shown in the following figures.
The animation shows that a point source emits impulsive pressure waves in the fluid domain; the waves are transmitted in the seabed.
Software request form: This software is not available as an open-source yet. It will be announced on the main page when it becomes available.
Feedback/suggestions: If you have any questions, feedback, or suggestion, please contact us with the feedback form or e-mail.
Apostolos Tsouvalas, e:mail: A.Tsouvalas@tudelft.nl
Yaxi Peng, e-mail:Y.Peng@tudelft.nl
References:
- Peng,Y.; Tsouvalas,A.; Metrikine,A.; Belderbos,E.Modellinganddevelopmentofaresonator-based noise mitigation system for offshore pile driving. In Proceedings of the 25th International Congress on Sound and Vibration 2018 (ICSV 2018): Hiroshima Calling, Hiroshima, Japan, 8–12 July 2018; Volume 8; pp. 5070–5077
- Tsouvalas, A.; Peng, Y.; Metrikine, A. Underwater Noise Generated By Offshore Pile Driving: A Pile-Soil-Water Vibroacoustic Model Based On A Mode Matching Method. In Proceedings of the 5th Underwater Acoustics Conference and Exhibition 2019 (UACE2019), Hersonissos, Greece, 30 June–5 July 2019; pp. 667–674.