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ECN publication
CFD Modelling of the Effect of Oscillating Jets on Streaming Heat Losses in a Torus-shaped Thermoacoustic Engine
Published by: Publication date:
ECN Biomass & Energy Efficiency 30-6-2016
ECN report number: Document type:
ECN-M--16-050 Conference Paper
Number of pages: Full text:
4 Download PDF  

A thermosacoustic engine converts heat into acoustic energy. A high temperature engine utilizes heat from a burner to drive the engine. Due to the high driving temperature acoustic streaming can be a strong heat loss mechanism that should be limited as much as possible. Linear acoustic simulation tools cannot be used to predict streaming nor its resulting heat loss. Therefore, computational fluid dynamics (CFD) has been used to simulate the streaming in a torus-shaped thermoacoustic engine. The present study builds upon previous CFD modeling and experimental studies from ECN on the high temperature TA engine and presented in [1] and [2]. Aim of the present work is to investigate the effect of oscillating helium jets originating from the heat exchangers on the degree of the streaming heat losses in the thermal buffer tube (TBT).

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