Journal ArticleDOI
Design environment for low-amplitude thermoacoustic energy conversion (DeltaEC)
TLDR
The Los Alamos thermoacoustics code, available at www.lanl.gov/thermoACoustics/, has undergone extensive revision this year, and a Python-based graphical user interface wrapped around that core provides improved usability as discussed by the authors.Abstract:
The Los Alamos thermoacoustics code, available at www.lanl.gov/thermoacoustics/, has undergone extensive revision this year. New calculation features have been added to the original Fortran computational core, and a Python‐based graphical user interface wrapped around that core provides improved usability. A plotter routinely displays thermoacoustic wave properties as a function of x or tracks results when a user‐specified input variable, such as frequency or amplitude, is varied. The Windows‐like user interface provides mouse‐based control, scrolling, and simultaneous displays of plots and of several categories of numerical values, in which color indicates important features. Thermoacoustic phenomena can be calculated with superimposed steady flow, and time‐averaged pressure gradients are calculated. In thermoacoustic systems with toroidal topology, this allows modeling of steady flow caused by gas diodes (with or without time‐averaged heat transfer) and Gedeon streaming. Thermoacoustic mixture separation is included, also with superimposed steady flow. The volume integral of the complex gas momentum is available, so vibrations of thermoacoustic systems can be analyzed.read more
Citations
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Journal ArticleDOI
Stirling cycle engines for recovering low and moderate temperature heat: A review
TL;DR: In this article, a review of the research development of Stirling cycle engines for recovering low and moderate temperature heat is presented, which includes four types of engines: kinetic, thermoacoustic, free-piston, and liquid piston types.
Journal ArticleDOI
Energy harvesting from a standing wave thermoacoustic-piezoelectric resonator
TL;DR: In this article, a one-dimensional thermoacoustic-piezoelectric (TAP) resonator is developed to convert thermal energy, such as solar or waste heat energy, directly into electrical energy.
Journal ArticleDOI
A two-stage traveling-wave thermoacoustic electric generator with loudspeakers as alternators
TL;DR: In this paper, a traveling-wave thermo-acoustic electric generator was designed, constructed and tested, and two low-impedance linear alternators were installed to extract and convert the engine's acoustic power to electricity.
Journal ArticleDOI
Review on the conversion of thermoacoustic power into electricity
TL;DR: A review of the four main methods to convert the (thermo)acoustic power into electricity is provided in this article, focusing on possible configurations, operating characteristics, output performance, and analytical and numerical methods to study the devices.
Journal ArticleDOI
An acoustically matched traveling-wave thermoacoustic generator achieving 750 W electric power
TL;DR: In this article, the acoustic impedance requirements of the traveling-wave thermoacoustic engine and linear alternators to reach an efficient and powerful operation state were studied quantitatively based on the decoupling method and theoretical analysis.
References
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Book
Fundamentals of acoustics
TL;DR: In this article, the authors present a two-dimensional wave equation and simple solutions for the wave equation with respect to the two dimensions of the wave and the two types of vibrations.
Journal ArticleDOI
Compact heat exchangers
TL;DR: The third edition of the second edition as discussed by the authors was published in 1964 and contains basic test data for eleven new surface configurations, including some of the very compact ceramic matrices, in both the English and the Systeme International (SI) system of units.
Book
Advanced Engineering Thermodynamics
TL;DR: The First Law of Thermodynamics and the Second Law of Exergy were combined in this paper to describe the destruction of exergy in single-phase and multi-phase systems.
Book
Introduction to Fluid Mechanics
Robert W. Fox,Alan T McDonald +1 more
TL;DR: In this article, the physical concepts of fluid mechanics and methods of analysis, beginning from first principles, are discussed, and a more orderly approach to problem solving is presented, starting from basic equations, states all assumptions clearly, and relates results to expected physical behavior with the aid of 103 example problems.
Book
Acoustics: An Introduction to Its Physical Principles and Applications
TL;DR: Pierces as mentioned in this paper is a classic text on acoustics with a rich history and development of the field of sound and acoustical engineering. But he organizes it superbly and writes intelligently with a wonderful way of integrating the history and evolution of the science and the graphics are exceptionally clear and communicative.