武汉工程大学学报2012，Vol.34Issue(1)：1-6,73,7.DOI:10.3969/j.issn.1674-2869.2012.1.001
热声理论的研究进展
Advance in thermoacoustic theory
摘要
Abstract
The basic principle and features of thermoacoustic self-excited oscillation are briefly introduced in this paper. In a thermoacoustic stack with longitudinal temperature gradient, which is an important part of thermoacoustic engine, the interactions between the entropy wave and the oscillating flow produce a rich variety of thermoacoustic phenomena such as self-excited gas oscillation and thermoacoustic heat pump. Thermoacoustic effect is of the great application potential in thermoacostic engine and refrigerator, thermoacoustic air-condition, thermoacoustic mixture separation, thermoacoustic condensation, natural gas liquefier, utilization of solar energvy and so on. The important milestones in the research of the thermoacoustic theory in the recent decades are summarized, mainly including the new achievements in thermoacoustic network model, mechanism of parameter exciting, investigation on characteristic time of system, thermodynamic optimization, simulation using lattice gas model, nonlinear thermoacoustic theory and so on. Among the important advancements, the Symplectic symmetry feature of thermoacoustic network is highlighted. The transferring matrix of working gas in isothermal fluid pipe of thermoacoustic system is symplectic matrix. The transferring matrix of working gas in regenerator of thermoacoustic system could be transferred to symplectic matrix by variable transformation. With variable transformation, the whole transferring matrix of thermoacoustic system could be denoted by symplectic matrix. The development trends of thermoacoustics in the future are forecasted, and some issues in thermoacoustics and research ideas on them are also proposed.关键词
热声效应/自激振荡/热声装置/研究进展Key words
thermoacoustic effect/self-excited oscillation/thermoacoustic theory/ research advance分类
通用工业技术引用本文复制引用
吴锋,李青,郭方中,舒安庆..热声理论的研究进展[J].武汉工程大学学报,2012,34(1):1-6,73,7.基金项目
国家自然科学基金项目(No.51176143) （No.51176143）
