Suppression of harmonics in a high frequency standing‐wave thermoacoustic engine

2008 ◽  
Vol 123 (5) ◽  
pp. 3543-3543
Author(s):  
Wei Dai ◽  
Bo Yu ◽  
Guoyao Yu ◽  
Ercang Luo
Keyword(s):  
Standing Wave ◽  
High Frequency ◽  
Thermoacoustic Engine

Simulation of a standing-wave thermoacoustic engine using compressible SIMPLE algorithm

2010 ◽  
Author(s):  
Dongwei Zhang ◽  
Yaling He ◽  
Yong Wang ◽  
Jing Huang ◽  
Liejin Guo ◽  
...  
Keyword(s):  
Standing Wave ◽  
Simple Algorithm ◽  
Thermoacoustic Engine

scholarly journals Обнаружение высокочастотных альфвеновских колебаний в омических разрядах сферического токамака Глобус-М2

2021 ◽  
Vol 47 (12) ◽  
pp. 17
Author(s):  
И.М. Балаченков ◽  
Ю.В. Петров ◽  
В.К. Гусев ◽  
Н.Н. Бахарев ◽  
В.И. Варфоломеев ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Standing Wave ◽  
High Frequency ◽  
Low Density ◽  
Frequency Range ◽  
High Frequency Oscillations ◽  
Model Predictions ◽  
Mode Excitation ◽  
Order Of Magnitude ◽  
Frequency Chirping

In Globus-M2 ohmic discharges with low density, by means of Mirnov coils array, magnetic field oscillations with frequencies in 1 MHz range were detected. Frequency range of these oscillations significantly exceed the range of TAE and RSAE frequencies, which were previously observed on Globus-M and Globus-M2 tokamaks, and their amplitude, contrary, turned out to be up to an order of magnitude lower. It was found that high frequency oscillations are interrelated with suprathermal electron fraction. At the same time the observed instability seems to have Alfvenic nature, since its frequency correlates well with Alfven frequency scaling. It was also found that magnetic perturbation always forms standing wave with predominantly low toroidal wavenumbers, including n = 0 structure, which makes gap (e.g. TAE) mode excitation impossible. Frequency chirping during single bursts with δω ~ √t is consistent with hole-clump model predictions.

Coupling of regenerator and end load in a standing wave thermoacoustic engine

2012 ◽  
Author(s):  
Xin Huang ◽  
Gang Zhou ◽  
Qing Li ◽  
Zhongjun Hu
Keyword(s):  
Standing Wave ◽  
Thermoacoustic Engine

Experimental investigation of an adjustable standing wave thermoacoustic engine

2018 ◽  
Vol 55 (3) ◽  
pp. 877-890 ◽  
Author(s):  
A. C. Alcock ◽  
L. K. Tartibu ◽  
T. C. Jen
Keyword(s):  
Experimental Investigation ◽  
Standing Wave ◽  
Thermoacoustic Engine

A high frequency cascade thermoacoustic engine

Cryogenics ◽  
2006 ◽  
Vol 46 (11) ◽  
pp. 771-777 ◽  
Author(s):  
Zhong Jun Hu ◽  
Qing Li ◽  
Qiang Li ◽  
Zheng Yu Li
Keyword(s):  
High Frequency ◽  
Thermoacoustic Engine
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