This article presents an assessment of alternative forms of the Green’s function for boundary element simulations of acoustic wave propagation in shallow water. It is assumed that the problem is two-dimensional, the source of acoustic disturbance is time-harmonic, the velocity of sound is constant and the medium in the absence of perturbations is quiescent. Efficient implementations of the boun...

The perfectly matched layer (PML) is a widely used technique for truncating unbounded domains in numerical simulations of wave propagation problems. In this paper, the PML technique is used with a standard one-way model to solve a benchmark problem for underwater acoustics modeling. Accurate solutions are obtained with a PML layer with a thickness of only a quarter of the wavelength. The effect...

Underwater wireless communication is a rapidly growing field, especially with the recent emergence of technologies such as autonomous underwater vehicles (AUVs) and remotely operated (ROVs). To support high-bandwidth applications using these technologies, optics has attracted significant attention, alongside its complementary technology - acoustics. In this paper, we propose hybrid opto-acousti...

In this paper we report the numerical design and experimental validation of a pentamode cloak for scattering reduction elliptical targets in underwater acoustics. Despite being well-known theoretical concept, validations transformation-based acoustic cloaking non-axisymmetric have been hindered due to difficulties related complexity required material distribution. We overcome these by adopting ...

Modeling acoustic propagation conditions is an important issue in underwater acoustics and there exist several mathematical/numerical models based on different approaches. Some of the most used approaches are based on ray theory, modal expansion and wave number integration techniques. Ray acoustics and ray tracing techniques are the most intuitive and often the simplest means for modeling sound...

Applications of underwater acoustics include sonar, communication, geophysical imaging, acoustical oceanography, and bioacoustics. Specialists typically work with little interdisciplinary interaction, the terminology they employ has evolved separately in each discipline, to point that transdisciplinary misunderstandings are common. Furthermore, increasing societal concern about possible detrime...