Results 31 to 40 of about 1,725 (197)

Mover guide in a linear electric generator with double-sided stationary stators

open access: yesThe Journal of Engineering, 2019
This study addresses double-sided stationary stators in a linear electric generator with similar operation to a linear oscillatory motion electric machine.
Pierre Kenfack   +2 more
doaj   +1 more source

Investigation into the Strouhal numbers associated with vortex shedding from parallel-plate thermoacoustic stacks in oscillatory flow conditions [PDF]

open access: yes, 2010
This paper investigates vortex shedding processes occurring at the end of a stack of parallel plates, due to an oscillating flow induced by an acoustic standing wave.
Jaworski, Arthur J.   +2 more
core   +1 more source

Weakly nonlinear thermoacoustics for stacks with slowly varying pore cross-sections [PDF]

open access: yes
A general theory of thermoacoustics is derived for arbitrary stack pores. Previous theoretical treatments of porous media are extended by considering arbitrarily shaped pores with the only restriction that the pore cross-sections vary slowly in the ...
Molenaar, J.   +3 more
core   +2 more sources

Study of Standing-Wave Thermoacoustic Electricity Generators for Low-Power Applications

open access: yesApplied Sciences, 2018
This paper is concerned with the study of low-cost, low-power thermoacoustic electricity generators. Based on target electrical output power values of 50 and 100 W, three standing wave prototypes (of both one-stage and two-stage prototypes) integrating a
Antonio Piccolo
doaj   +1 more source

Acoustic field improvement through adjustable resonator to enhance the performance of thermoacoustic-Stirling engine

open access: yesEnergy Reports, 2022
In this study, the simulation and experiment of a thermoacoustic Stirling heat engine (TASHE) with a phase-adjuster are demonstrated. The phase-adjuster is used as a tool to tune the acoustic field of the TASHE in order to maintain the high performance ...
Isares Dhuchakallaya   +2 more
doaj   +1 more source

Thermoacoustic Modeling of Cryogenic Hydrogen

open access: yesEnergies
Future thermoacoustic cryocoolers employing hydrogen as a working fluid can reduce reliance on helium and improve hydrogen liquefaction processes. Traditional thermoacoustic modeling methods often assume ideal-gas thermophysical properties and neglect ...
Konstantin I. Matveev, Jacob W. Leachman
doaj   +1 more source

Energy and Efficiency Evaluation of Feedback Branch Design in Thermoacoustic Stirling-Like Engines

open access: yesEnergies, 2019
Stirling-like thermoacoustic generators are external combustion engines that provide useful acoustic power in the absence of moving parts with high reliability and respect for the environment.
Carmen Iniesta   +3 more
doaj   +1 more source

High-fidelity simulation of an ultrasonic standing-wave thermoacoustic engine with bulk viscosity effects

open access: yes, 2017
We have carried out boundary-layer-resolved, unstructured fully-compressible Navier--Stokes simulations of an ultrasonic standing-wave thermoacoustic engine (TAE) model.
Bhatia A. B.   +4 more
core   +1 more source

Sampling in thermoacoustic tomography [PDF]

open access: yesJournal of Inverse and Ill-posed Problems, 2020
AbstractWe explore the effect of sampling rates when measuring data given byMffor special operatorsMarising in Thermoacoustic Tomography. We start with sampling requirements onMfgivenfsatisfying certain conditions. After this we discuss the resolution limit onfposed by the sampling rate ofMfwithout assuming any conditions on these sampling rates.
openaire   +3 more sources

Advancements in thermoacoustic technology: a comprehensive review and analysis of recent research

open access: yesInternational Journal of Air-Conditioning and Refrigeration
Thermoacoustic technology attracts significant attention from researchers due to its high reliability, environmentally friendly operation, and less maintenance.
Mahesh Krishna Gaikwad   +6 more
doaj   +1 more source

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