Experimental study of a bi-directional axial impulse turbine for thermoacoustic wave conditions

Mohd Sa'at, Fatimah Al-Zahrah and Wong, ChoiTae and Herawan, Safarudin Gazali (2025) Experimental study of a bi-directional axial impulse turbine for thermoacoustic wave conditions. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 130 (2). pp. 74-89. ISSN 2289-7879

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Abstract

This paper reports a study on optimizing a 3D printed bi-directional axial impulse turbines for thermoacoustic environment with different opening sizes at one end of the resonator. The laboratory tests used a loudspeaker to induce acoustic flow variations. Experiments were conducted to test different variables: the end plate's opening diameter and the use of an elliptic nose cone. Key findings include the optimal 93 mm opening for the maximum voltage and speed of the turbine, the slight improvement in flow dynamics due to the use of the elliptic nose cone, and the identification of the system's resonance frequency at 85 Hz. This study provides insights into the use of the bi-directional axial impulse turbines in thermoacoustic wave conditions for different opening size at one end of the resonator with and without the assistance of guiding cone for the turbine, filling a critical gap in literature and contributing to optimizing thermoacoustic systems for enhanced energy conversion. The results emphasize the importance of tailoring components to optimal frequencies to obtain better efficiency.

Item Type:	Article
Uncontrolled Keywords:	Bi-directional turbine, Thermoacoustics open-closed resonator, 3D print, Elliptic nose cone
Divisions:	Faculty Of Mechanical Technology And Engineering
Depositing User:	Norfaradilla Idayu Ab. Ghafar
Date Deposited:	13 May 2026 02:08
Last Modified:	13 May 2026 02:08
URI:	http://eprints.utem.edu.my/id/eprint/29746
Statistic Details:	View Download Statistic

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