Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Modelling Seismic Oceanography Experiments by Using First- and Second-Order Complex Frequency Shifted Perfectly Matched Layers
Year:2009
Research Areas
  • Mechanical engineering
Information
Abstract
This work investigates the ability of modelling seismic oceanography experiments by using underwater acoustic propagation equations. Seismic oceanography tries to retrieve the fine structure of the ocean water masses by processing the acoustic waves reflected in the low-contrast interfaces of fronts, eddies, internal waves or thermohaline intrusions. Since the reflectivity of such interfaces is of order 10¿3-10¿4, the absorption capability of the numerical boundaries becomes crucial. Complex Frequency Shifted offers a better alternative to classical Perfectly Matched Layer formulation, but has not yet been extended to acoustic equations. Here, first- and second-order Complex Frequency Shifted Perfectly Matched Layers equations are proposed which can provide reflection coefficients of order 10¿5. Therefore, a numerical Finite-Difference Time-Domain (FDTD) scheme combined with the proposed CFS-PML equations is able to model such experiments.
International
Si
JCR
Si
Title
ACTA ACUSTICA UNITED WITH ACUSTICA
ISBN
1610-1928
Impact factor JCR
0,538
Impact info
Volume
95
10.3813/AAA.918242
Journal number
6
From page
1104
To page
1111
Month
NOVIEMBRE
Ranking
Participants
  • Autor: Manuel Recuero Lopez (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Investigación en Instrumentación y Acústica Aplicada (I2A2)
  • Centro o Instituto I+D+i: Centro de Acústica Aplicada y Evaluación No Destructiva (CAEND). Centro Mixto UPM-CSIC
  • Departamento: Ingeniería Mecánica y de Fabricación
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)