IGGCAS OpenIR
Finite difference modeling of ultrasonic propagation (coda waves) in digital porous cores with un-split convolutional PML and rotated staggered grid
Zhang, Yan1; Fu, Li-Yun1; Zhang, Luxin2; Wei, Wei1; Guan, Xizhu1
2014-05-01
Source PublicationJOURNAL OF APPLIED GEOPHYSICS
ISSN0926-9851
Volume104Pages:75-89
SubtypeArticle
AbstractUltrasonic wave propagation in heterogeneous porous cores under laboratory studies is an extremely complex process involved with strong scattering by microscale heterogeneous structures. The resulting coda waves, as an index to measure scattering attenuation, are recorded as continuous waveforms in the tail portion of wavetrains. Because of the contamination of reflections from the side ends and reverberations between the sample surfaces, it is difficult to extract pure coda waves from ultrasonic measurements for the estimation of the P- and S-coda attenuation quality factors. Comparisons of numerical and experimental ultrasonic wave propagation in heterogeneous porous cores can give important insight into understanding the effect of boundary reflections on the P-and S-codas in the laboratory experiment. It challenges numerical modeling techniques by three major issues: the creation of a digital core model to map heterogeneous rock properties in detail, the perfect simulation with a controllable and accurate absorbing boundary, and overcoming the numerical dispersions resulting from high-frequency propagation and strong heterogeneity in material. A rotated staggered-grid finite-difference method of Blot's poroelastic equations is presented with an unsplit convolutional perfectly matched layer (CPML) absorbing boundary to simulate poroelastic wave propagation in isotropic and fluid-saturated porous media. The contamination of boundary reflections on coda waves is controlled by the CPML absorbing coefficients for the comparison between numerical and experimental ultrasonic waveforms. Numerical examples with a digital porous core demonstrate that the boundary reflections contaminate coda waves seriously, causing much larger coda quality factors and thus underestimating scattering attenuation. (C) 2014 Elsevier B.V. All rights reserved.
KeywordDigital porous core Rotated staggered-grid Numerical modeling Unsplit convolutional perfectly matched layer Ultrasonic coda attenuation
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1016/j.jappgeo.2014.02.012
Funding OrganizationNational Natural Science Foundation of China(40925013) ; National Natural Science Foundation of China(40925013) ; National Natural Science Foundation of China(40925013) ; National Natural Science Foundation of China(40925013) ; Strategic Leading Science and Technology Programme (Class B) of the Chinese Academy of Sciences(XDB10010400) ; Strategic Leading Science and Technology Programme (Class B) of the Chinese Academy of Sciences(XDB10010400) ; Strategic Leading Science and Technology Programme (Class B) of the Chinese Academy of Sciences(XDB10010400) ; Strategic Leading Science and Technology Programme (Class B) of the Chinese Academy of Sciences(XDB10010400) ; National Natural Science Foundation of China(40925013) ; National Natural Science Foundation of China(40925013) ; National Natural Science Foundation of China(40925013) ; National Natural Science Foundation of China(40925013) ; Strategic Leading Science and Technology Programme (Class B) of the Chinese Academy of Sciences(XDB10010400) ; Strategic Leading Science and Technology Programme (Class B) of the Chinese Academy of Sciences(XDB10010400) ; Strategic Leading Science and Technology Programme (Class B) of the Chinese Academy of Sciences(XDB10010400) ; Strategic Leading Science and Technology Programme (Class B) of the Chinese Academy of Sciences(XDB10010400) ; National Natural Science Foundation of China(40925013) ; National Natural Science Foundation of China(40925013) ; National Natural Science Foundation of China(40925013) ; National Natural Science Foundation of China(40925013) ; Strategic Leading Science and Technology Programme (Class B) of the Chinese Academy of Sciences(XDB10010400) ; Strategic Leading Science and Technology Programme (Class B) of the Chinese Academy of Sciences(XDB10010400) ; Strategic Leading Science and Technology Programme (Class B) of the Chinese Academy of Sciences(XDB10010400) ; Strategic Leading Science and Technology Programme (Class B) of the Chinese Academy of Sciences(XDB10010400) ; National Natural Science Foundation of China(40925013) ; National Natural Science Foundation of China(40925013) ; National Natural Science Foundation of China(40925013) ; National Natural Science Foundation of China(40925013) ; Strategic Leading Science and Technology Programme (Class B) of the Chinese Academy of Sciences(XDB10010400) ; Strategic Leading Science and Technology Programme (Class B) of the Chinese Academy of Sciences(XDB10010400) ; Strategic Leading Science and Technology Programme (Class B) of the Chinese Academy of Sciences(XDB10010400) ; Strategic Leading Science and Technology Programme (Class B) of the Chinese Academy of Sciences(XDB10010400)
WOS KeywordPERFECTLY MATCHED LAYER ; PARTIALLY SATURATED ROCKS ; POROELASTIC NUMERICAL EXPERIMENTS ; BIOT SLOW-WAVE ; VELOCITY-STRESS ; GRAZING-INCIDENCE ; ELASTIC-WAVES ; SEISMIC-WAVES ; NIVELSTEINER SANDSTONE ; HETEROGENEOUS MEDIA
Indexed BySCI
Language英语
Funding OrganizationNational Natural Science Foundation of China(40925013) ; National Natural Science Foundation of China(40925013) ; National Natural Science Foundation of China(40925013) ; National Natural Science Foundation of China(40925013) ; Strategic Leading Science and Technology Programme (Class B) of the Chinese Academy of Sciences(XDB10010400) ; Strategic Leading Science and Technology Programme (Class B) of the Chinese Academy of Sciences(XDB10010400) ; Strategic Leading Science and Technology Programme (Class B) of the Chinese Academy of Sciences(XDB10010400) ; Strategic Leading Science and Technology Programme (Class B) of the Chinese Academy of Sciences(XDB10010400) ; National Natural Science Foundation of China(40925013) ; National Natural Science Foundation of China(40925013) ; National Natural Science Foundation of China(40925013) ; National Natural Science Foundation of China(40925013) ; Strategic Leading Science and Technology Programme (Class B) of the Chinese Academy of Sciences(XDB10010400) ; Strategic Leading Science and Technology Programme (Class B) of the Chinese Academy of Sciences(XDB10010400) ; Strategic Leading Science and Technology Programme (Class B) of the Chinese Academy of Sciences(XDB10010400) ; Strategic Leading Science and Technology Programme (Class B) of the Chinese Academy of Sciences(XDB10010400) ; National Natural Science Foundation of China(40925013) ; National Natural Science Foundation of China(40925013) ; National Natural Science Foundation of China(40925013) ; National Natural Science Foundation of China(40925013) ; Strategic Leading Science and Technology Programme (Class B) of the Chinese Academy of Sciences(XDB10010400) ; Strategic Leading Science and Technology Programme (Class B) of the Chinese Academy of Sciences(XDB10010400) ; Strategic Leading Science and Technology Programme (Class B) of the Chinese Academy of Sciences(XDB10010400) ; Strategic Leading Science and Technology Programme (Class B) of the Chinese Academy of Sciences(XDB10010400) ; National Natural Science Foundation of China(40925013) ; National Natural Science Foundation of China(40925013) ; National Natural Science Foundation of China(40925013) ; National Natural Science Foundation of China(40925013) ; Strategic Leading Science and Technology Programme (Class B) of the Chinese Academy of Sciences(XDB10010400) ; Strategic Leading Science and Technology Programme (Class B) of the Chinese Academy of Sciences(XDB10010400) ; Strategic Leading Science and Technology Programme (Class B) of the Chinese Academy of Sciences(XDB10010400) ; Strategic Leading Science and Technology Programme (Class B) of the Chinese Academy of Sciences(XDB10010400)
WOS Research AreaGeology ; Mining & Mineral Processing
WOS SubjectGeosciences, Multidisciplinary ; Mining & Mineral Processing
WOS IDWOS:000335618600009
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/85571
Collection中国科学院地质与地球物理研究所
Corresponding AuthorFu, Li-Yun
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earths Deep Interior, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
First Author AffilicationInstitute of Geology and Geophysics, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Geology and Geophysics, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Zhang, Yan,Fu, Li-Yun,Zhang, Luxin,et al. Finite difference modeling of ultrasonic propagation (coda waves) in digital porous cores with un-split convolutional PML and rotated staggered grid[J]. JOURNAL OF APPLIED GEOPHYSICS,2014,104:75-89.
APA Zhang, Yan,Fu, Li-Yun,Zhang, Luxin,Wei, Wei,&Guan, Xizhu.(2014).Finite difference modeling of ultrasonic propagation (coda waves) in digital porous cores with un-split convolutional PML and rotated staggered grid.JOURNAL OF APPLIED GEOPHYSICS,104,75-89.
MLA Zhang, Yan,et al."Finite difference modeling of ultrasonic propagation (coda waves) in digital porous cores with un-split convolutional PML and rotated staggered grid".JOURNAL OF APPLIED GEOPHYSICS 104(2014):75-89.
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