Measurements of acoustic streaming in a looped-tube thermoacoustic engine with a jet pump

Tetsushi Biwa, Yusuke Tashiro, Masahiro Ishigaki, Yuki Ueda, Taichi Yazaki

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

This paper reports on the acoustic streaming in a looped-tube thermoacoustic prime mover equipped with an asymmetric constriction called a jet pump. The time-averaged mass flow velocity was determined using visualization methods and using acoustic field measurements. It was demonstrated that the magnitude and the direction of the velocity were dependent on the orientation of the jet pump. From the observed velocities, we estimated the heat carried away from the hot heat exchanger by the mass flow. It was shown that the heat loss was decreased from 30 W to 6.5 W by reversing the orientation of the jet pump, when the input heat power supplied to the prime mover was 100 W. The influence of the acoustic streaming was also studied from the cooling temperature of the looped-tube cooler.

Original languageEnglish
Article number064914
JournalJournal of Applied Physics
Volume101
Issue number6
DOIs
Publication statusPublished - 2007 Apr 8

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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