热声效应及其应用研究进展

(1.西安科技大学 安全科学与工程学院,陕西 西安 710054; 2.陕西省工业过程安全与应急救援工程技术研究中心,陕西 西安 710054)

热声效应; 热声理论; 热声应用; 热声轰燃探测器; 数值模拟

Theories and applications of thermo-acoustic effects
LI Ya-qing1,2,SHI Xue-qiang1,2,ZHANG Yu-tao1,2,

(1.College of Safety Science and Engineering,Xi'an University of Science and Technology,Xi'an 710054,China; 2.Shaanxi Engineering Research Center for Industrial Process Safety & Emergency Rescue,Xi'an 710054,China)

thermo-acoustic effect; thermo-acoustic theory; thermo-acoustic application; thermoacoustic flashover detector; numerical simulation

DOI: 10.13800/j.cnki.xakjdxxb.2018.0607

备注

热声效应是一种热与声相互转化的现象,涉及复杂的非线性因素,而热声机械无运动部件,有着广阔的应用前景。为加深对热声效应的研究,文中首先介绍了热声理论的研究进展状况,分析了各个理论的局限性及适应性,接着从实验研究及数值模拟两方面总结了现有的研究方法及其取得的研究成果,之后详细阐述了热致声与声致冷2种效应的应用。最后,基于当前的研究现状,分析了热声理论在研究与应用方面存在的问题与遇到的挑战,讨论了热声转化的发展趋势。结果 表明,建立科学的适用于大振幅热声效应的理论方法是发展推广热声效应的难点和重点,而数值模拟与实验研究的有效结合是推进热声理论发展的强有力手段,虽然目前热声机械还只停留在实验室研究,但凭借热声转换的独特优势,热声装置将会是清洁能源、航空航天、消防等行业的重要应用技术。

The thermo-acoustic effect means conversions between heat and sound which involves complex nonlinear factors.Thermo-acoustic machineries exhibits broad applications for having no moving parts.In this paper,theories regarding thermo-acoustic effect was firstly introduced,and their scopes of application and limitations were further analyzed.Then current methodologies and findings in thermo-acoustic effect was summarized from standpoints of experimental study and numerical simulation.Applications of the thermo-acoustic effect was set forth as well.On the basis of research actuality,problems and challenges of thermo-acoustic effect in development and application were analyzed.Meanwhile,the development trend of the conversion between heat and sound was discussed.Analysis results indicate that constructing theories and methods that can be applied to the large amplitude thermo-acoustic effect is difficulties and focus of thermo-acoustic effect.Nevertheless,the effective combinations of experimental study and numerical simulation is a powerful means to promote the development of the thermo-acoustic theory.Although the current thermo-acoustic machinery is still limited in laboratory scale,thermo-acoustic devices with the unique advantages of thermo-acoustic conversion will be an attractive technique in the fields of clean energy,aerospace,fire fighting,etc.