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On the Electroacoustic Transformation Method Based on Electrokinetic Phenomena
Acoustical Physics ( IF 0.9 ) Pub Date : 2020-07-27 , DOI: 10.1134/s1063771020030057
B. P. Sharfarets , V. E. Kurochkin , V. A. Sergeev , Yu. V. Gulyaev

In a linear and nonlinear approximation (laminar regime), physical and mathematical models are proposed to describe the functioning mechanism of a new type of acoustic transducer. Brief information is given on the electrokinetic phenomenon of electroosmosis. The necessary equations are presented for describing acoustic fields caused by electrokinetic phenomena: the presence of a double electric layer and the total applied electric field consisting of a constant field and a field that carries acoustic information. The equations for a fluid in a circular cylindrical capillary are considered as applied to calculating the hydrodynamics of a stationary electroosmotic process and a harmonic acoustic process. Theoretically, with a computational model, and experimentally, it is shown that taking into account the nonlinearity of the stationary process leads, in contrast to the linear stationary process, to transfer of the energy of the constant electric field to the acoustic field caused by an alternating electric field. The results, with certain restrictions, are true for a wide class of porous structures. Experimentally, for a paper membrane as a capillary-porous structure, pumping was used to amplify the first harmonic of the acoustic pressure from 5.9 to 28 times for different values of the alternating electric field amplitude. The theoretical and experimental results obtained in this study make it possible to solve the priority scientific and technical problem of designing and creating new types of acoustic emitters.

中文翻译:

基于电动现象的电声转换方法

在线性和非线性近似(层状状态)中,提出了物理和数学模型来描述新型声换能器的功能机理。简要介绍了电渗的电动现象。提出了必要的方程式来描述由电动现象引起的声场:双电层的存在以及由恒定场和承载声信息的场组成的总施加电场。圆柱毛细管中的流体方程被认为适用于计算固定电渗过程和谐波声过程的流体动力学。从理论上讲,通过计算模型,在实验上,结果表明,与线性平稳过程相比,考虑到平稳过程的非线性会导致将恒定电场的能量转移到由交变电场引起的声场。在一定的限制下,结果适用于多种多孔结构。在实验上,对于毛细孔结构的纸膜,对于不同的交变电场振幅值,使用泵浦将声压的一次谐波从5.9倍放大到28倍。在这项研究中获得的理论和实验结果使得有可能解决设计和制造新型声发射器的优先科学和技术问题。将恒定电场的能量转移到由交变电场引起的声场。在一定的限制下,结果适用于多种多孔结构。在实验上,对于毛细孔结构的纸膜,对于不同的交变电场振幅值,使用泵浦将声压的一次谐波从5.9倍放大到28倍。在这项研究中获得的理论和实验结果使得有可能解决设计和制造新型声发射器的优先科学和技术问题。将恒定电场的能量转移到由交变电场引起的声场。在一定的限制下,结果适用于多种多孔结构。实验上,对于毛细孔结构的纸膜,对于不同的交变电场幅度值,抽运可将声压的一次谐波从5.9倍放大到28倍。在这项研究中获得的理论和实验结果使得有可能解决设计和制造新型声发射器的优先科学技术问题。对于交流电场振幅的不同值,使用泵浦将声压的一次谐波从5.9倍放大到28倍。在这项研究中获得的理论和实验结果使得有可能解决设计和制造新型声发射器的优先科学和技术问题。对于交流电场幅度的不同值,使用泵浦将声压的一次谐波从5.9倍放大到28倍。在这项研究中获得的理论和实验结果使得有可能解决设计和制造新型声发射器的优先科学和技术问题。
更新日期:2020-07-27
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