Abstract:
:Diversity of acoustic streaming field in a 2D rectangular chamber with a traveling wave and using water as the acoustic medium is numerically investigated by the finite element method. It is found that the working frequency, the vibration excitation source length, and the distance and phase difference between two separated symmetric vibration excitation sources can cause the diversity in the acoustic streaming pattern. It is also found that a small object in the acoustic field results in an additional eddy, and affects the eddy size in the acoustic streaming field. In addition, the computation results show that with an increase of the acoustic medium's temperature, the speed of the main acoustic streaming decreases first and then increases, and the angular velocity of the corner eddies increases monotonously, which can be clearly explained by the change of the acoustic dissipation factor and shearing viscosity of the acoustic medium with temperature. Commercialized FEM software COMSOL Multiphysics is used to implement the computation tasks, which makes our method very easy to use. And the computation method is partially verified by an established analytical solution.
journal_name
Ultrasonicsjournal_title
Ultrasonicsauthors
Tang Q,Hu Jdoi
10.1016/j.ultras.2014.11.015subject
Has Abstractpub_date
2015-04-01 00:00:00pages
27-34eissn
0041-624Xissn
1874-9968pii
S0041-624X(14)00345-Xjournal_volume
58pub_type
杂志文章相关文献
ULTRASONICS文献大全abstract::An influence of ultrasonic treatment (drawing) on structure, high temperature durability, evaporation and creep behaviours of tungsten single crystal and wires were investigated. A relation of tungsten wires properties with dislocation distribution was determined. ...
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/j.ultras.2004.02.002
更新日期:2004-04-01 00:00:00
abstract::An ultrasonic backscattering model is developed for textured polycrystalline materials with orthotropic or trigonal grains of ellipsoidal shape. The model allows us to simulate realistic microstructures and orthotropic macroscopic material textures resulting from thermomechanical processing for a broad variety of mate...
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/j.ultras.2014.02.020
更新日期:2014-09-01 00:00:00
abstract::Nonalcoholic fatty liver disease (NAFLD) is the most common chronic liver disease. Quantitative ultrasound facilitates clinical grading of hepatic steatosis (the early stage of NAFLD). However, the utility of quantitative ultrasound as a first-line method for community screening of hepatic steatosis remains unclear. T...
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/j.ultras.2020.106329
更新日期:2021-03-01 00:00:00
abstract::This will be a discussion of the non-invasive determination of the viscosity of a non-Newtonian fluid in laminar pipe flow over the range of shear rates present in the pipe. The procedure used requires knowledge of the flow profile in and the pressure drop along a long straight run of pipe. The profile is determined b...
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/j.ultras.2006.05.027
更新日期:2006-12-22 00:00:00
abstract::Ultrasound evaluation permits the state of rocks to be determined quickly and cheaply, satisfying the demands faced by today's producers of ornamental stone, such as environmental sustainability, durability and safety of use. The basic objective of the present work is to analyse and develop the usefulness of ultrasoun...
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/j.ultras.2013.06.006
更新日期:2014-01-01 00:00:00
abstract::To improve the integrated performance of a representative bimodal linear ultrasonic motor under continuous operation, this paper proposes a novel dual-frequency asymmetric excitation method for such motors which can operate under traditional single-phase asymmetric or two-phase symmetric excitation modes. In particula...
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/j.ultras.2020.106224
更新日期:2020-12-01 00:00:00
abstract::Transducer is the necessary and most important part in the maxonics. New applications demand for new transducer, and the renovation of the transducer will open a new field for the application of the maxonics. The important method to develop new transducer is to find and develop new material. The rare earth giant magne...
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/j.ultras.2006.05.128
更新日期:2006-12-22 00:00:00
abstract::The digital ultrasonic fixed path interferometer designed for testing small amounts of sample was used for the investigation of whole blood coagulation, retraction and clot melting processes. The ultrasound velocity and absorption are determined from the characteristics of an acoustic resonator consisting of an emitte...
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/0041-624x(78)90007-0
更新日期:1978-01-01 00:00:00
abstract::In this paper a high intensity focused ultrasound (FUS) phantom model was developed, in order to be used in experiments for Blood Brain Barrier (BBB) disruption. The target was to create a phantom model that represents the disruption of the BBB during ultrasound application. An appropriate experimental setup was creat...
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/j.ultras.2020.106244
更新日期:2021-02-01 00:00:00
abstract::The importance of the analysis of the radiofrequency signal is by now recognized in the field of tissue characterization via ultrasound. The RF signal contains a wealth of information and structural details that are usually lost in the B-Mode representation. The HyperSPACE (Hyper SPectral Analysis for Characterization...
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/j.ultras.2016.02.010
更新日期:2016-05-01 00:00:00
abstract::An improved method for ultrasonic location of multiple flaws using perpendicular ultrasonic arrays, working in near-field conditions, is presented. The method uses the pulse-echo technique and is based on the processing of the information acquired by both the elemental emitting transducers and their adjacent ones. Thi...
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/j.ultras.2006.05.107
更新日期:2006-12-22 00:00:00
abstract::This article describes the use of the frequency domain finite element (FDFE) technique for guided wave mode selection in inhomogeneous waveguides. Problems with Rayleigh-Lamb and Shear-Horizontal mode excitation in isotropic homogeneous plates are first studied to demonstrate the application of the approach. Then, two...
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/j.ultras.2015.12.007
更新日期:2016-04-01 00:00:00
abstract::This paper presents a new method of measuring dispersion curves of leaky Lamb waves propagating in a thin plate. The measurement system is based on a lens-less line-focus transducer and its defocusing measurement technique. A new waveform processing method known as V(f, z) method is introduced for analyzing the measur...
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/s0041-624x(00)00069-x
更新日期:2001-06-01 00:00:00
abstract::A diagnostic ultrasound method is being developed for measuring surface contact areas at the tibio-femoral interface of a total knee replacement in a non-clinical industrial setting as an engineering design tool. As an initial step towards this, a previous study mathematically predicted the effect of ultrasound beam t...
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/s0041-624x(02)00382-7
更新日期:2002-10-01 00:00:00
abstract::The present analysis extends the previous work on the axial acoustic scattering of a high-order Bessel trigonometric beam (HOBTB) from a fluid sphere [F.G. Mitri, J. Appl. Phys. 109 (2011) 014916] to the generalized case of arbitrary scattering from a fluid sphere placed off-axially. The scattered pressure is expresse...
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/j.ultras.2012.12.008
更新日期:2013-07-01 00:00:00
abstract:BACKGROUND AND MOTIVATION:Previous works investigating the radiation force of diverging spherical progressive waves incident upon spherical particles have demonstrated the direction of reversal of the force when the particle is subjected to a curved wave-front. In this communication, the analysis is extended to the cas...
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/j.ultras.2010.12.004
更新日期:2011-07-01 00:00:00
abstract::Several experimental studies have demonstrated that ultrasound (US) can accelerate enzymatic fibrinolysis and this effect is further enhanced in the presence of ultrasound contrast agents (UCA). Although UCA have been shown to be safe when administered to ischemic stroke patients, safety information of these agents in...
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/j.ultras.2007.10.003
更新日期:2008-04-01 00:00:00
abstract::This paper deals with the analysis of the guided evanescent waves in stopbands of a 1D phononic crystal (PC). A new numerical implementation is shown in order to get the complex values of the wavenumbers in a frequency range where a gap occurs. The considered phononic system is an aluminum plate with a one-dimensional...
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/j.ultras.2012.09.009
更新日期:2013-02-01 00:00:00
abstract::Signal modeling has been proven to be an useful tool to characterize damaged materials under ultrasonic nondestructive evaluation (NDE). In this paper, we introduce a novel digital signal model for ultrasonic NDE of multilayered materials. This model borrows concepts from lattice filter theory, and bridges them to the...
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/j.ultras.2015.05.013
更新日期:2015-09-01 00:00:00
abstract::In this paper, the resonance frequency equation and expression of displacement amplitude magnifications of a full-wave barber ultrasonic horn are obtained. By discussing the relationships between the displacement amplitude magnifications and the geometrical dimensions, the optimized design of the horn for the largest ...
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/j.ultras.2011.12.006
更新日期:2012-07-01 00:00:00
abstract::Fundamental understanding of ultrasound interaction with material discontinuities having closed interfaces has many engineering applications such as nondestructive evaluation of defects like kissing bonds and cracks in critical structural and mechanical components. In this paper, to analyze the acoustic field nonlinea...
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/j.ultras.2017.12.007
更新日期:2018-03-01 00:00:00
abstract::Ultrasonic non-destructive testing of polycrystalline structures can be disturbed by scattering at grain boundaries. Understanding and modeling this so-called "structural noise" is crucial for characterization as well as detection purposes. Structural noise can be considered as a fingerprint of the material under inve...
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/j.ultras.2013.06.012
更新日期:2014-01-01 00:00:00
abstract::The focus of contrast-enhanced ultrasound research has developed beyond visualizing the blood pool and its flow to new areas such as perfusion imaging, drug and gene therapy, and targeted imaging. In this work comparison between the application of polymer- and phospholipid-shelled ultrasound contrast agents (UCAs) for...
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/j.ultras.2010.05.006
更新日期:2011-01-01 00:00:00
abstract::The characterization of brain tissue is crucial to better understand neurological disorders. Mechanical characterization is an emerging tool in that field. The purpose of this work was to validate a transient ultrasound technique aimed at measuring dispersion of mechanical parameters of the brain tissue. The first par...
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/j.ultras.2017.10.009
更新日期:2018-03-01 00:00:00
abstract::Use of in-fiber Fabry-Perot (FP) filters based on fiber Bragg gratings as both sensor as well as an interrogator for enhancing the detection limit of elastic wave sensing is investigated in this paper. The sensitivity of such a demodulation scheme depends on the spectral discrimination of the sensor and interrogator g...
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/j.ultras.2015.02.018
更新日期:2015-07-01 00:00:00
abstract::Forced fluid flow can cause the enhancement of multibubble sonoluminescence (SL) under suitable conditions. The effect of directional flow with a circulator is similar to that of rotating flow with a stirrer. The mechanism of the enhancement is that both flows prevent cavitation bubbles from coalescing and clustering,...
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/j.ultras.2006.05.022
更新日期:2006-12-22 00:00:00
abstract::We study thickness-shear vibration of a quartz plate connected to two piezoelectric ceramic plates with initial deformations caused by a biasing electric field. The theory for small deformations superposed on finite biasing deformations in an electroelastic body is used. It is shown that the resonant frequencies of th...
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/j.ultras.2010.07.002
更新日期:2011-02-01 00:00:00
abstract::Interference noising originating from the ultrasonic testing defect signal seriously influences the accuracy of the signal extraction and defect location. Time-frequency analysis methods are mainly used to improve the defects detection resolution. In fact, the S-transform, a hybrid of the Short time Fourier transform ...
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/j.ultras.2013.09.004
更新日期:2014-02-01 00:00:00
abstract::We derive a simple expression, which gives an approximate value of the Rayleigh wave velocity in an isotropic solid. This approximation is five times better than that given by Viktorov. The velocity equation can be easily inverted in order to obtain an accurate determination of the elastic constants. This procedure ca...
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/j.ultras.2006.09.006
更新日期:2007-03-01 00:00:00
abstract::This study aims to bridge the gap between transport mechanisms of an improved ultrasound contrast agent (UCA) and its resulting behavior in a clinical imaging study. Phospholipid-shelled microbubbles nested within the aqueous core of a polymer microcapsule are examined for their use and feasibility as an improved UCA....
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/j.ultras.2014.06.019
更新日期:2014-12-01 00:00:00