Results 1 to 10 of about 23,415 (117)

Nonlinear oscillation and acoustic scattering of bubbles [PDF]

Ultrasonics Sonochemistry, 2021
The scattered acoustic pressure and scattered cross section of bubbles is studied using the scattered theory of bubbles. The nonlinear oscillations of bubbles and the scattering acoustic fields of a spherical bubble cluster are numerically simulated ...
Yan Ma, Feiyan Zhao
doaj   +2 more sources

Numerical simulation and experimental verification of multi-highlight dual-target acoustic scattering based on multi-physics field coupling [PDF]

Scientific Reports
Gas cylinders are regarded as critical acoustic equipment in underwater diver operation systems. The highlight echo intensity from the cylinder body and edges is recognized as a major contributor to the overall target acoustic scattering.
Jincan Li, Peizhen Zhang, Yuanhang Zhang
doaj   +2 more sources

Tunable acoustic scattering in composite duct structures with elastic membrane discontinuities. [PDF]

PLoS ONE
This study investigates acoustic wave scattering in a composite duct structure incorporating a rigid annular shell connected to a flexible cylindrical shell via an embedded elastic membrane disc.
Hani Alahmadi, Aqsa Yaseen, Salman Saud Alsaeed, Muhammad Afzal, Naif Alkuhayli   +4 more
doaj   +2 more sources

Similarity Study of Electromagnetic and Underwater Acoustic Scattering by Three-Dimensional Targets in Unbounded Space

Journal of Marine Science and Engineering, 2023
The characterization of targets by electromagnetic (EM) scattering and underwater acoustic scattering is an important object of research in these two related fields. However, there are some difficulties in the simulation and measurement of the scattering
Jie Wang, Hai Lin, Huaihai Guo, Qi Zhang, Junxiang Ge   +4 more
doaj   +1 more source

Acoustic scattering properties of underwater corner reflector complexes

Zhongguo Jianchuan Yanjiu, 2023
ObjectiveIn order to further improve the speed and accuracy of calculating the acoustic scattering fields of underwater concave targets, the acoustic scattering characteristics of underwater corner reflector complexes are studied.
Pengcheng CHAI, Changxiong CHEN, Yan LIU, Fulin ZHOU, Zilong PENG   +4 more
doaj   +1 more source

Modulation Mechanism of Acoustic Scattering in Underwater Corner Reflectors with Acoustic Metasurfaces

Archives of Acoustics, 2023
Using the tunderwater corner reflector (CR) to simulate the acoustic scattering characteristics of the military target is a new technology to counter active sonar detection.
Jiaman DU, Zilong PENG, Lili GE, Shijin LYU, Fulin ZHOU, Yan LIU   +5 more
doaj   +1 more source

Acoustic scattering effect prediction of helicopter fuselage based on BEM and convective FW–H equation

Acta Acustica, 2022
The main acoustic noise source of helicopters is supposed to be the rotor blades, but the scattering effect of the helicopter fuselage sometimes cannot be ignored.
Wang Zeyang, Huang Jun, Yi Mingxu
doaj   +1 more source

Exploring the underlying mechanism of acoustic radiation force on a sphere in a fluid-filled rigid tube

AIP Advances, 2021
The propagation of sound waves in a fluid-filled rigid tube has potential application in acoustic particle-positioning, valuable reagent recovery, and noninvasive manipulation of targets.
Jingyao Shi, Shuyuan Li, Guangbin Zhang, Xiaofeng Zhang   +3 more
doaj   +1 more source

Effects of surface ship motion attitude on acoustic scattering characteristics

Zhongguo Jianchuan Yanjiu, 2023
ObjectivesIn order to further improve the accuracy of torpedoes in the acoustic homing identification of complex surface targets, a simulation study on the acoustic scattering characteristics of surface ship motion attitudes in random waves is carried ...
Yan LIU, Linjiang HAN, Pengcheng CHAI, Fulin ZHOU, Zilong PENG   +4 more
doaj   +1 more source

A Method for Enhancing the Acoustic Scattering Characteristics of Underwater Acoustic Corner Reflectors in Vacuum Cavities

Shock and Vibration, 2023
To alleviate the problem of unsatisfactory target strength and scattering stability of an underwater corner reflector, a method to enhance the acoustic scattering characteristics using a vacuum cavity as an acoustic reflecting layer is proposed ...
Jingzhuo Zhang, Dawei Xiao, Taotao Xie
doaj   +1 more source