Modelling of Thermoacoustic Phenomena in an Electrically Heated Rijke Tube

Autor/in	Beke, Tamas
Titel	Modelling of Thermoacoustic Phenomena in an Electrically Heated Rijke Tube
Quelle	In: European Journal of Physics, 31 (2010) 6, S.1331-1344 (14 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0143-0807
DOI	10.1088/0143-0807/31/6/003
Schlagwörter	Engines; Heat; Scientific Principles; Science Instruction; Energy; Thermodynamics; Information Technology; Science Experiments; Measurement Equipment; Equations (Mathematics); College Science + Suchen Sie Ihr Suchwort? Maschine; Hitze; Teaching of science; Science education; Natural sciences Lessons; Naturwissenschaftlicher Unterricht; Energie; Thermodynamik; Informationstechnologie; Messinstrument; Equations; Mathematics; Gleichungslehre
Abstract	Thermoacoustic instability plays an important role in various technical applications, for instance in jet or rocket motors, thermoacoustic engines, pulse combustors and industrial burners. 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. The Rijke tube is a simple device open at both ends with a mean airflow and a concentrated heat source (a heated wire grid). 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. In this paper we present a project that includes physical measuring, examination and modelling. 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. The aim of our project is to help our students enhance their knowledge about thermoacoustics and develop their applied information technology skills. (Contains 5 figures.) (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10