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A Numerical Investigation of the Effect of Boundary Conditions on acoustic pressure Distribution in a Sonochemical Reactor Chamber

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Fluid Dynamics & Materials Processing 2024年第6期20卷 1425-1439页

作者： Ivan Sboev Tatyana Lyubimova Konstantin Rybkin Michael Kuchinskiy UEC-Aviadvigatel 93 Komsomolsky ProspectPerm614990Russia Laboratory of Computing Hydrodynamic Institute of Continuous Media Mechanics UB RASPerm614013Russia Laboratory of Interfacial Hydrodynamic Perm State UniversityPerm614068Russia

The intensification of physicochemical processes in the sonochemical reactor chamber is widely used in problems of synthesis,extraction and *** of the most important mechanisms at play in such processes is the acoustic cavitation due to the non-uniform distribution of acoustic pressure in the *** has a strong impact on the surface degradation *** this work,a numerical calculation of the acoustic pressure distribution inside the reactor chamber was performed using COMSOL *** numerical results have revealed the dependence of the structure of the acoustic pressure field on the boundary conditions for various thicknesses of the piezoelectric *** particular,the amplitude of the acoustic pressure is minimal in the case of absorbing boundaries,and the attenuation becomes more significant as the thickness of the piezoelectric transducer *** addition,reflective boundaries play a significant role in the formation and distribution of zones of maximum cavitation activity.

关键词： Ultrasound numerical simulation acoustic pressure field cavitation erosion foil test

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Tunable patterning of microscale particles using a surface acoustic wave device with slanted-finger interdigital transducers

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2021年第5期22卷 331-343页

作者： Yan-cheng WANG Cheng-yao XU De-qing MEI Jia-wei LIU State Key Laboratory of Fluid Power and Mechatronic Systems Zhejiang UniversityHangzhou 310027China Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province Zhejiang UniversityHangzhou 310027China School of Mechanical Engineering Zhejiang UniversityHangzhou 310027China

Polymer-based materials with patterned functional particles have been used to develop smart devices with multiple *** paper presents a novel method to pattern microscale particles into biocompatible polyethylene glycol diacrylate(PEGDA)fluid through a designed surface acoustic wave(SAW)device with slanted-finger interdigital transducers(SFITs).By applying signals of different frequencies,the SFITs can excite SAWs with various wavelengths to pattern the microscale *** structural design and working principle of the SAW device with SFITs are firstly *** investigate the generation of standing SAWs and pressure field distributions of the SAW device with SFITs,a numerical model was *** results showed that different strip-shape patterned pressure fields can be generated,and the period and width of adjacent strips can be adjusted by changing the frequencies of the excitation *** were performed to verify that the microscale particles in the PEGDA solution can be successfully patterned into strip-shape patterns with various positions,periods,and *** results obtained in this study demonstrate that the developed method of using an SAW device with SFITs can be used for tunable patterning of microscale particles in solutions,and shows great potential for biomedical and microfluidic applications.

关键词： Tunable patterning Surface acoustic wave(SAW) acoustic pressure field Polymer-based composite Slanted-finger interdigital transducers(SFITs)

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