Thermoacoustic phenomena generated inadvertently during combustion, and those produced by heating and cooling material to generate a temperature gradient, have mostly been studied independently. Indeed, researchers of one phenomenon are seldom familiar with the literature on the other. This paper seeks to remedy this by reviewing the two subjects alongside one another, by comparing and contrasting them where possible. There is a brief account of the historically important papers in the development of both subjects, followed by a description of the nature of the phenomena. A selective number of papers is called upon to illustrate these principles. Techniques for handling the pure acoustics in the two subjects are addressed, before an outline is given of the modelling of the two thermoacoustic systems. Non-linear phenomena in the two systems are then explored. Finally, methods of ‘control’, of changing the system characteristics, are briefly discussed.

中文翻译：

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火焰和发动机热声学的共同特征

燃烧过程中无意间产生的热声现象，以及通过加热和冷却材料以产生温度梯度而产生的热声现象，大多已得到独立研究。确实，一种现象的研究人员很少熟悉另一种现象的文献。本文试图通过复习两个主题，并在可能的情况下进行比较和对比，来纠正这一问题。简要介绍了这两个主题在历史上的重要论文，然后对现象的性质进行了描述。要求选择一些论文来说明这些原理。在给出两个热声系统的建模概述之前，先介绍了处理两个主题中纯声学的技术。然后探讨了两个系统中的非线性现象。最后，简要讨论了改变系统特性的“控制”方法。