TY - JOUR
T1 - Numerical and ultrasonic experimental simulations of elastic wave propagation around hollow cylinder
AU - Perton, M.
AU - Sánchez-Sesma, F. J.
AU - Spurlin, J. H.
AU - Flores, E.
AU - Navarrete, M.
AU - Gómez, R.
AU - Marengo-Mogollón, H.
N1 - Funding Information:
Thanks are given to the Coordinación de Sistemas de Cómputo, Área de Sistemas Unix/Linux and to the Unidad de Servicios de Información of the Instituto de Ingeniería, and to the Centro de Ciencias Aplicadas y Desarrollo Tecnológico, from the Universidad Nacional Autónoma de México. Partial supports from DGAPA-UNAM, Project IN121709, Mexico, and from the Consejo Técnico de la Investigación Científica for the postdoctoral fellowship of the senior author are greatly appreciated.
PY - 2012/6
Y1 - 2012/6
N2 - A laser-ultrasonic experimental setup was used to study, at a reduced scale, the wave propagation inside and around fluid-filled wells. Simulations tools were also developed and calibrated from comparisons with experimental signals. These tools serve as a connection to realistic scale. A semi-analytical approach, the discrete wave number method was first used to compute signals in a simplified geometrical configuration. This method is fast enough to be used in the identification of the main parameters that describe at best the experimental signals. Then a finite difference scheme was implemented in order to describe accurately the actual well. The two methods describe the attenuation mechanisms by using the KelvinVoigt model for the solid and the Maxwell model for the fluid. Comparisons between numerical and experimental waveforms, obtained in the two fundamental elastic configurations: the fast and the slow formations, show very good agreement in arrival times, waveforms and relative amplitudes. This satisfactory result provides insights useful for the recognition and interpretation of wave propagation in complex media. Such is the case of modern sonic-logging technology.
AB - A laser-ultrasonic experimental setup was used to study, at a reduced scale, the wave propagation inside and around fluid-filled wells. Simulations tools were also developed and calibrated from comparisons with experimental signals. These tools serve as a connection to realistic scale. A semi-analytical approach, the discrete wave number method was first used to compute signals in a simplified geometrical configuration. This method is fast enough to be used in the identification of the main parameters that describe at best the experimental signals. Then a finite difference scheme was implemented in order to describe accurately the actual well. The two methods describe the attenuation mechanisms by using the KelvinVoigt model for the solid and the Maxwell model for the fluid. Comparisons between numerical and experimental waveforms, obtained in the two fundamental elastic configurations: the fast and the slow formations, show very good agreement in arrival times, waveforms and relative amplitudes. This satisfactory result provides insights useful for the recognition and interpretation of wave propagation in complex media. Such is the case of modern sonic-logging technology.
KW - Borehole
KW - discrete wave number
KW - finite differences
KW - laser-ultrasonic
UR - http://www.scopus.com/inward/record.url?scp=84862519873&partnerID=8YFLogxK
U2 - 10.1142/S0218396X12400085
DO - 10.1142/S0218396X12400085
M3 - Artículo
AN - SCOPUS:84862519873
SN - 0218-396X
VL - 20
JO - Journal of Computational Acoustics
JF - Journal of Computational Acoustics
IS - 2
M1 - 1240008
ER -