Results 21 to 30 of about 1,128 (182)
Standing-wave thermoacoustic engines
EPJ Web of Conferences, 2012 The aim of this study is mainly devoted to explain a thermoacoustic effect. We explore the basic principles of thermoacoustic engines and primarily we focus on a quarter-wavelength closed-open thermoacoustic engine as a prime mover, where temperature ...
Vestfálová Magda +3 more
doaj +1 more source
Traveling-wave thermoacoustic refrigerator with curved and tapered surfaces to minimize streaming
Invention Disclosure, 2022 The present article describes a traveling-wave thermoacoustic refrigeration system driven by a thermoacoustic heat engine. The coupled engine-refrigerator system consists of a resonator tube, which the thermoacoustic engine and thermoacoustic ...
Mohsen Bahrami, Fathollah Ommi
doaj +1 more source
Machines, 2022 The equations governing energy conversion in traveling wave thermoacoustic machines are affected by their multiphysics nature. Their theoretical study is complicated and, in order to obtain real results, it is necessary to resort to prototypes and ...
Carmen Iniesta +3 more
doaj +1 more source
AIP Advances, 2019 Stacks are among the most important devices for influencing the energy-conversion efficiency of work flow to heat flow during thermoacoustic phenomena. An optimal stack design is indispensable for the practical application of thermoacoustic systems.
Shin-ichi Sakamoto +2 more
doaj +1 more source
Study on Working Fluids Testing and Multiphase Flow Model Optimization in Thermoacoustic Engines [PDF]
E3S Web of ConferencesThis study investigates the impact of different working fluids on the performance of non-phasechange thermoacoustic engines and compares the application of two multiphase flow models in phasechange thermoacoustic engines. Simulation results show that, at
Xie Jiutian, Ren Fan, Yang Jiale
doaj +1 more source
Numerical investigation on a travelling wave thermoacoustic heat pump
Journal of Thermal Science and Technology, 2018 A thermoacoustic heat pump heater is a device having the ability to produce heat from acoustic power. The heat pump investigated was composed of an acoustic driver, a branched tube, and a looped tube.
Maroua BEN NASR +3 more
doaj +1 more source
Numerical analysis of a standing-wave thermoacoustic refrigerator by one-dimensional simulation
Nihon Kikai Gakkai ronbunshu, 2018 In this paper, a numerical simulation for a standing-wave thermoacoustic refrigerator using the equations of conservation law are proposed. In this simulation, the gas flow in the thermoacoustic refrigerator is expressed by the quasi one-dimensional ...
Rin IRIE +4 more
doaj +1 more source
Simplification of sound-pressure characteristics using narrow flow channels subject with temperature gradient [PDF]
MATEC Web of Conferences, 2018 A thermoacoustic engine is one of promising system for utilization of unused energy. The object of this paper is to study the system of unused energy, such as heat energy and sound energy in noise using thermoacoustic engine. The thermoacoustic engine is
Kyoden Tomoaki
doaj +1 more source
Advanced Energy and Sustainability Research, Volume 7, Issue 3, March 2026.Hydrogen‐powered aviation offers a transformative pathway to zero‐emission flight by eliminating in‐flight CO2 emissions. Key considerations include propulsion systems (fuel cells and hydrogen combustion), cryogenic storage and insulation challenges, infrastructure and cost barriers, and supply‐chain constraints.
Mubasshira +4 more
wiley +1 more source
Aerospace, 2021 In the present work, 3D Unsteady Reynolds-Averaged Navier-Stokes (URANS) simulations are performed to investigate the generation and mitigation mechanism of combustion-sustained thermoacoustic instabilities in a modelled swirl combustor.
Yuze Sun, Dan Zhao, Xiaowei Zhu
doaj +1 more source