Results 21 to 30 of about 11,841 (159)

Encapsulated thermoacoustic projector based on freestanding carbon nanotube film [PDF]

, 2017
A suspended nanotube film (or films) producing sound by means of the thermoacoustic (TA) effect is encapsulated between two plates, at least one of which vibrates, to enhance sound generation efficiency and protect the film.
Aliev, Ali E., Baughman, Ray H.
core   +1 more source

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, Vít Tomáš, Novotný Petr, Lopes José   +3 more
doaj   +1 more source

Synchronization framework for modeling transition to thermoacoustic instability in laminar combustors

, 2020
We, herein, present a new model based on the framework of synchronization to describe a thermoacoustic system and capture the multiple bifurcations that such a system undergoes.
Saha, Abhishek, Sujith, R. I., Unni, Vishnu R., Weng, Yue   +3 more
core   +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

Accounting for convective effects in zero-Mach-number thermoacoustic models [PDF]

, 2014
This paper presents a methodology to account for some mean-flow effects on thermo-acoustic instabilities when using the zero-Mach-number assumption. It is shown that when a computational domain is represented under the M=0 assumption, a nonzero-Mach ...
Bloxsidge, Boij, Candel, Candel, Cantrell, Chu, Davies, DeGoey, Doak, Dowling, Dowling, Duran, Durrieu, E. Motheau, F. Nicoud, Ffowcs Williams, Goh, Gullaud, Hield, Howe, Huang, Karlsson, Kotake, L. Selle, Lamarque, Leyko, Lieuwen, Lighthill, Macquisten, Marble, Morfey, Morfey, Motheau, Motheau, Myers, Nicoud, Nicoud, Peters, Pitsch, Polifke, Polifke, Rao, Rayleigh, Sattelmayer, Schmitt, Selle, Wolf, Wolf, Yu   +48 more
core   +5 more sources

Thermoacoustic tomography with variable sound speed [PDF]

, 2009
We study the mathematical model of thermoacoustic tomography in media with a variable speed for a fixed time interval, greater than the diameter of the domain.
Agranovsky M, Duistermaat J J, Finch D, Gunther Uhlmann, Haltmeier M, Hristova Y, Hristova Y, Lasiecka I, Patch S K, Plamen Stefanov, Taylor M E, Trèves F, Trèves F, Xu Y   +13 more
core   +4 more sources

Measurement of heat flow caused by a standing-wave component generated by a thermoacoustic phenomenon

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, Yuji Ise, Yuichiro Orino   +2 more
doaj   +1 more source

Assessing the Performance of Design Variations of a Thermoacoustic Stirling Engine Combining Laboratory Tests and Model Results

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, José Luis Olazagoitia, Jordi Vinolas, Jaime Gros   +3 more
doaj   +1 more source

Study on Working Fluids Testing and Multiphase Flow Model Optimization in Thermoacoustic Engines [PDF]

E3S Web of Conferences
This 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

Dimensionless scaling of heat-release-induced planar shock waves in near-critical CO2

, 2017
We performed highly resolved one-dimensional fully compressible Navier-Stokes simulations of heat-release-induced compression waves in near-critical CO2. The computational setup, inspired by the experimental setup of Miura et al., Phys. Rev.
Ismail A. F., Lemmon E.W., Nitsche K., Onuki Akira, Poling Bruce E.   +4 more
core   +1 more source