Multi-physics coupling in thermoacoustic devices: A review

G Chen, L Tang, B Mace, Z Yu - Renewable and Sustainable Energy …, 2021 - Elsevier
Latest developments in thermoacoustic devices have demonstrated comparable power
output and efficiency, but higher reliability and lower cost when compared to conventional …

CFD modeling of thermoacoustic energy conversion: a review

A Di Meglio, N Massarotti - Energies, 2022 - mdpi.com
In this article, a comprehensive review of the computational fluid dynamics (CFD)-based
modeling approach for thermoacoustic energy conversion devices is proposed. Although …

Characterizing modal exponential growth behaviors of self-excited transverse and longitudinal thermoacoustic instabilities

D Zhao, Y Guan - Physics of Fluids, 2022 - pubs.aip.org
Self-excited thermoacoustic instabilities as frequently observed in rocket motors, gas
turbines, ramjets, and aeroengine afterburners are highly detrimental and undesirable for …

Entropy generation and CO2 emission in presence of pulsating oscillations in a bifurcating thermoacoustic combustor with a Helmholtz resonator at off-design …

Y Guan, S Becker, D Zhao, J Xu, M Shahsavari… - Aerospace Science and …, 2023 - Elsevier
In this work, we develop a 2D numerical model of a Y-shaped bifurcating combustor with a
Helmholtz resonator attached. Propane (C 3 H 8) is fueled and burnt with air by applying …

Predicting unsteady heat-fluid interaction features and nonlinear acoustic behaviors in standing-wave thermoacoustic engines using unsteady RANS, LES and hybrid …

L Guo, D Zhao, J Xu, MO Tokhi, HR Karimi - … Communications in Heat and …, 2023 - Elsevier
The study presented in this paper aims to simulate a standing-wave thermoacoustic engine
(SWTAE) system by capturing its nonlinear thermoacoustic features with three-dimensional …

Temperature difference and stack plate spacing effects on thermodynamic performances of standing-wave thermoacoustic engines driven by cryogenic liquids and …

L Guo, D Zhao, S Becker - Journal of Thermal Science, 2022 - Springer
The standing-wave thermoacoustic engines (TAE) are applied in practice to convert thermal
power into acoustic one to generate electricity or to drive cooling devices. Although there is …

[HTML][HTML] Enhancing energy conversion performances in standing-wave thermoacoustic engine with externally forcing periodic oscillations

L Guo, D Zhao, L Cheng, X Dong, J Xu - Energy, 2024 - Elsevier
The present work focuses on enhancing thermo-acoustics energy conversion performance
and nonlinear dynamics of heat-driven acoustics oscillations in standing-wave …

Development of a sunlight-driven thermoacoustic engine for solar energy harvesting

G Chen, S Tao, R Liang, Z Li, W Sun, J Xu… - Applied Thermal …, 2024 - Elsevier
Solar-powered thermoacoustic engine (TAE) is a promising technology for harvesting solar
energy. In this study, a prototype of triple quarter-wavelength standing-wave TAEs with …

[HTML][HTML] Numerical investigations on energy conversion performances in twin standing-wave thermoacoustic engines with various geometric and operational …

L Guo, D Zhao, G Yu, X Dong - Thermal Science and Engineering Progress, 2023 - Elsevier
The present work considers the heat-driven acoustic characteristics and dynamic thermal-
fluid flow fields in a twin standing-wave thermoacoustic engine (TSWTAE). Emphasis is …

Estimation of limit cycle amplitude after onset threshold of thermoacoustic Stirling engine

SH Hsu, YT Li - Experimental Thermal and Fluid Science, 2023 - Elsevier
This study estimates the amplitude saturation process of spontaneous pressure oscillations
in the thermoacoustic Stirling engine, which harnesses a stack-screen regenerator, after the …