Results 21 to 30 of about 1,146,309 (300)

Acoustic interaction forces between small particles in an ideal fluid [PDF]

open access: yes, 2014
We present a theoretical expression for the acoustic interaction force between small spherical particles suspended in an ideal fluid exposed to an external acoustic wave.
Bruus, Henrik, Silva, Glauber T.
core   +2 more sources

The acoustic force density acting on inhomogeneous fluids in acoustic fields [PDF]

open access: yes, 2016
We present a theory for the acoustic force density acting on inhomogeneous fluids in acoustic fields on time scales that are slow compared to the acoustic oscillation period.
Augustsson, Per   +2 more
core   +4 more sources

Research and Fabrication of Broadband Ring Flextensional Underwater Transducer

open access: yesSensors, 2021
At present, high-speed underwater acoustic communication requires underwater transducers with the characteristics of low frequency and broadband. The low-frequency transducers also are expected to be low-frequency directional for realization of point-to ...
Jiuling Hu   +5 more
doaj   +1 more source

Symmetric Connectivity of Underwater Acoustic Sensor Networks Based on Multi-Modal Directional Transducer

open access: yesSensors, 2021
Topology control is one of the most essential technologies in wireless sensor networks (WSNs); it constructs networks with certain characteristics through the usage of some approaches, such as power control and channel assignment, thereby reducing the ...
Gang Qiao   +4 more
doaj   +1 more source

Three-Dimensional Numerical Modeling of Acoustic Trapping in Glass Capillaries [PDF]

open access: yes, 2017
Acoustic traps are used to capture and handle suspended microparticles and cells in microfluidic applications. A particular simple and much-used acoustic trap consists of a commercially available, millimeter-sized, liquid-filled glass capillary actuated ...
Bruus, Henrik, Ley, Mikkel W. H.
core   +3 more sources

Sparse Bayesian Learning for Channel Estimation in Time-Varying Underwater Acoustic OFDM Communication

open access: yesIEEE Access, 2018
In this paper, we study the sparse Bayesian learning (SBL) framework for channel estimation in underwater acoustic (UWA) orthogonal frequency-division multiplexing (OFDM) communication systems, which provides a desirable property of preventing structural
Gang Qiao   +5 more
doaj   +1 more source

Study on Time Reversal Maximum Ratio Combining in Underwater Acoustic Communications

open access: yesApplied Sciences, 2021
Time reversal (TR) can achieve temporal and spatial focusing by exploiting spatial diversity in complex underwater environments with significant multipath. This property makes TR useful for underwater acoustic (UWA) communications.
Anbang Zhao   +4 more
doaj   +1 more source

Kinetic Enhancement of Raman Backscatter, and Electron Acoustic Thomson Scatter [PDF]

open access: yes, 2006
1-D Eulerian Vlasov-Maxwell simulations are presented which show kinetic enhancement of stimulated Raman backscatter (SRBS) due to electron trapping in regimes of heavy linear Landau damping. The conventional Raman Langmuir wave is transformed into a set
A. B. Langdon   +8 more
core   +2 more sources

Asynchronous Multisonar Data Integration Approach Used to Detect Sparse Targets

open access: yesIEEE Access, 2019
Due to the advantage of the distributed multisensor detection system which makes sonar detect further and more accurate estimation of the target state, distributed multisensor data fusion algorithms are widely applied to the sonar detection system ...
Yang Chen   +5 more
doaj   +1 more source

Optimization of the Equivalent Source Configuration for the Equivalent Source Method

open access: yesJournal of Marine Science and Engineering, 2021
The equivalent source method is widely applied to study structural acoustic radiation in an underwater environment. However, there is still uncertainty in arranging the equivalent source, and the current mainstream configuration method needs a large ...
Lanyue Zhang   +4 more
doaj   +1 more source

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