Results 31 to 40 of about 1,767 (217)
Influence of Working Conditions on Parameters of Thermoacoustic Engine with Travelling Wave
Archives of Acoustics, 2020 Thermoacoustic converters are devices for direct conversion of acoustic energy into thermal energy in the form of temperature difference, or vice versa – for converting thermal energy into an acoustic wave.
Andrzej Bogdan DOBRUCKI +1 more
doaj +1 more source
On the influence of external stochastic excitation on linear oscillators with subcritical self-excitation applied to brake squeal [PDF]
, 2019 A characteristic of linear systems with self-excitation is the occurrence of non-normal modes. Because of this non-normality, there may be a significant growth in the vibration amplitude at the beginning of the transient process even in the case of ...
Gräbner, Nils +3 more
core +1 more source
Scanning thermoacoustic tomography in biological tissue [PDF]
, 2000 Microwave-induced thermoacoustic tomography was explored to image biological tissue. Short microwave pulses irradiated tissue to generate acoustic waves by thermoelastic expansion.
Ku, Geng, Wang, Lihong V.
core +1 more source
Mover guide in a linear electric generator with double-sided stationary stators
The 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
Weakly nonlinear thermoacoustics for stacks with slowly varying pore cross-sections [PDF]
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
Applied 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
Energy 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
High frequency pressure oscillator for microcryocoolers [PDF]
, 2008 Microminiature pulse tube cryocoolers should operate at a frequency of an order higher than the conventional macro ones because the pulse tube cryocooler operating frequency scales inversely with the square of the pulse tube diameter.
H. J. Holland +11 more
core +2 more sources
Thermoacoustic Modeling of Cryogenic Hydrogen
EnergiesFuture 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
Bistable swirled flames and influence on flame transfer functions [PDF]
, 2014 Large Eddy Simulations (LES) are used to study a lean swirl-stabilized gas turbine burner where the flow exhibits two stable states. In the first one, the flame is attached to the central bluff body upstream of the central recirculation zone which ...
Armitage +56 more
core +3 more sources