Characterization of bidirectional impulse turbines for thermoacoustic engines

Michael A.G. Timmer*, Theo H. Van Der Meer

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

6 Citations (Scopus)
87 Downloads (Pure)


A bidirectional impulse turbine to convert thermoacoustic power into electricity is investigated. Experimental measurements are done with a loudspeaker for varying acoustic conditions and turbine loads. The results are used to characterize the turbine performance and compare it to steady flow turbomachinery and turbines in oscillating water columns. A dimensional analysis is done to identify the variables that influence the turbine performance, after which a scaling is determined that uniquely determines the efficiency of the turbine. The work is finished by providing the impedance of the bidirectional turbine such that it can be implemented in a thermoacoustic engine.

Original languageEnglish
Pages (from-to)3524-3535
Number of pages12
JournalJournal of the Acoustical Society of America
Issue number5
Publication statusPublished - 1 Nov 2019


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