A new numerical optimization approach for standing-wave thermoacoustic engines
| Autor: | Chaitou, Hussein, Nika, Philippe, Layes, Guillaume |
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| Přispěvatelé: | Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174) (FEMTO-ST), Université de Technologie de Belfort-Montbeliard (UTBM)-Ecole Nationale Supérieure de Mécanique et des Microtechniques (ENSMM)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: | |
| Zdroj: | International Congress on Sound and Vibration International Congress on Sound and Vibration, Jul 2012, Vilnius, Lithuania |
| Popis: | International audience; This paper develops a novel method to optimize standing-wave thermoacoustic engines with a parallel-plate stack using the particle swarm optimization method. The aim of the present work is to understand the effect of geometric, thermal and pressure parameters on the performance of a thermoacoustic engine. In particular, the studied parameters include: the resonators' length and diameter, stacks' length, hydraulic radius, porosity and position in the resonator, hot and cold temperature, frequency, mean pressure and drive ratio. To attain this objective, the Particle Swarm Optimization (PSO) method is highlighted and used in order to optimize this high number of parameters in one thermoacoustic problem which is, for the best of our knowledge, investigated for the first time in the literature. In this paper, the linear theory is applied to calculate the acoustics' pressure and velocity of a numerical model which consists of three sections, hot resonator, stack and cold resonator sections. Both the exergetic efficiency and the acoustic power produced are the two objective functions to be optimized. Results show that when exergetic efficiency is high the acoustic power produced is low andvice-versa. So, a third function that combines the two functions is optimized in order to have acceptable and meaningful values of both exergetic efficiency and acoustic power produced. Finally, significant results, which are useful to design any new thermoacoustic devices, are showed and discussed. |
| Databáze: | OpenAIRE |
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