Abstract
This paper presents a nonlinear, time-domain model of thermoacoustic devices based on cross-sectional averaged equations. Heat transfer perpendicular to the device axis - which lies at the core of thermoacoustic effects - is modeled in a novel and more realistic way. Heat conduction in the solid surfaces surrounding the fluid medium is included. Contrary to the previous versions of this model [Watanabe et al., J. Acoust. Soc. Am. 102, 3484¿3496 (1997)], the present version does not require artificial damping and is numerically robust. The model performance is illustrated on several examples: a prime mover, an externally driven thermoacoustic refrigerator, and a combined prime mover/refrigerator system.
Original language | Undefined |
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Pages (from-to) | 1431-1444 |
Number of pages | 14 |
Journal | Journal of the Acoustical Society of America |
Volume | 112 |
Issue number | 4 |
DOIs | |
Publication status | Published - 2002 |
Keywords
- METIS-207422
- IR-43790