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Andrea Adriani, Stefano Serra-Capizzano and Cristina Tablino-Possio
We consider the Helmholtz equation and the fractional Laplacian in the case of the complex-valued unbounded variable coefficient wave number μ" role="presentation" style="position: relative;">??µ
µ
, approximated by finite differences. In a rec...
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Tianwei Huang, Mengxing He, Kan Hong, Yingtien Lin and Pengcheng Jiao
Curved channels and aquatic vegetation are commonly present in the riverine environment. In this study, the effects of vegetation density and distribution on the hydrodynamic characteristics of a mixed layer developed over a 180-degree curved channel wer...
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Oscar Scussel, Michael J. Brennan, Fabrício Cézar L. de Almeida, Mauricio K. Iwanaga, Jennifer M. Muggleton, Phillip F. Joseph and Yan Gao
The frequency range of the leak noise in buried water pipes, measured using acoustic correlators, depends significantly on the type of pipe and its location as well as the type of sensors used. Having a rough idea of this frequency range can be beneficia...
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Mehrdad Hadizadeh-Bazaz, Ignacio J. Navarro and Víctor Yepes
Recently, the repair and maintenance of structures has been necessary to prevent these structures? sudden collapse and to prevent human and financial damage. A natural factor in marine environments that destroys structures and reduces their life is the p...
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Edna S. Cárdenas, Samuel K. Takazawa, Milton A. Garcés, David L. Chichester, Riley D. Hunley and Chris D. Young
Persistent low-frequency (<180 Hz) acoustic detection took place within the boundaries of Oak Ridge National Laboratory to monitor full power operations of the High Flux Isotope Reactor. Three acoustic sensors were installed at distances of 69, 101, and ...
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