Related Experiment Video
Updated: May 26, 2025

Fabrication and Characterization of Thickness Mode Piezoelectric Devices for Atomization and Acoustofluidics
Published on: August 5, 2020
The reasonableness and feasibility of replacing standing wave vibration with air piston mode vibration in
1School of Mechanical Engineering, Inner Mongolia University of Science and Technology, Baotou, 014010, China.
Abstract:
On the basis of analyzing the longitudinal forced vibration of the gas column in the resonator of a half-wavelength standing wave thermoacoustic refrigerator, the idea of replacing the standing wave vibration with the first-order piston mode vibration of the gas column in the thermoacoustic refrigerator was proposed, so as to increase the vibration amplitude of the gas in the resonator, realize the large alternating flow of gas, and improve the working efficiency of the thermoacoustic refrigerator. At the same time, its rationality and feasibility are discussed from the aspects of modal vibration, pressure distribution of gas column piston, and temperature variation of gas microcluster vibration in equilibrium position. Combined with the existing research results, the superiority of the application of the first-order piston mode vibration of the gas column in the thermoacoustic refrigerator is further explained. The results provide a new research idea and direction for further reducing the cold end temperature of thermoacoustic refrigerator.
Related Concept Videos
Refrigerators and Heat Pumps
A household refrigerator removes heat from...
Sound Waves: Resonance
Standing Waves in a Cavity
Damped Oscillations
Although friction and other non-conservative...
Magnetic Damping
If, however, the bob is a slotted metal plate, the magnet produces a much smaller effect. When a slotted metal plate enters the field, an emf is induced by the change in flux; however, it is less effective because the slots limit the...
Steady, Laminar Flow Between Parallel Plates

