Thermoacoustic School Project Work with an Electrically Heated Rijke TubeĮRIC Educational Resources Information Center The aim of our project is to help our students enhance their knowledge about thermoacoustics and develop their applied information technology skills.
We have employed electrically heated Rijke tubes in our thermoacoustic school project work, and present a numerical algorithm to predict the transition to instability in this model the effects of the main system parameters are demonstrated. In this paper we present a project that includes physical measuring, examination and modelling. It serves as a convenient prototypical example to understand thermoacoustic effects since it is a simplified thermoacoustic resonator once excited, under certain conditions, it is capable of creating a sustained sound when thermal energy is added. The Rijke tube is a simple device open at both ends with a mean airflow and a concentrated heat source (a heated wire grid). The main objective of this paper is to present the theory of thermoacoustic oscillations, and for this purpose a Rijke-type thermal device was built. Thermoacoustic instability plays an important role in various technical applications, for instance in jet or rocket motors, thermoacoustic engines, pulse combustors and industrial burners. Modelling of thermoacoustic phenomena in an electrically heated Rijke tube
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