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The Rijke tube as an initial value problem
3rd AIAA/CEAS Aeroacoustics Conference, 1997The extension of Computational Aeroacoustics (CAA) techniques to the study of thermoacoustic oscillations requires careful consideration of the fundamental mechanisms and validation of the approach when possible. A straightforward example of a system in which thermoacoustic oscillations may arise is provided by the Rijke tube.
Douglas Nark +3 more
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Modeling Nonlinear Thermoacoustic Instability in an Electrically Heated Rijke Tube
48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition, 2010An analysis of thermoacoustic instability is performed for a horizontal Rijke tube with an electrical resistance heater as the heat source. The governing equations for this fluid flow become stiff and are difficult to solve by the computational fluid dynamics (CFD) technique, as the Mach number of the steady flow and the thickness of the heat source ...
Mariappan, Sathesh, Sujith, R. I.
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Active control of the noise from a rijke tube
Journal of Sound and Vibration, 1986Instabilities caused by flames or other heat sources in resonators can be suppressed with a feedback system. It consists of a microphone inside the resonator, a phase-shifter, an amplifier and a loudspeaker at one end of the resonator. The pressure field produced by the loudspeaker changes the boundary conditions at the end of the resonator.
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A Model of Heat Transfer in Rijke Tube Burners
Combustion Science and Technology, 1996Abstract This paper presents a simple velocity transfer function for use in analysing the acoustic characteristics of Rijke Tube burners. The use of the transfer function is first demonstrated for predicting gauze tone amplification of a Rijke Tube burner when the flame/gauze system is situated in the lower quadrant of an entirely open tube.
A. C. McINTOSH, S. RYLANDS
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Model-Based Control of a Rijke Tube Combustion Instability
11th AIAA/CEAS Aeroacoustics Conference, 2005A Rijke tube is used to demonstrate model-based control of a combustion instability, where controller design is based on measurement of the unstable system. The Rijke tube used was of length 0.75m and had a grid-stabilised laminar flame in its lower half. A microphone was used as a sensor and a loudspeaker as an actuator for active control.
Aimee Morgans, Ann Dowling
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Thermoacoustics and the Rijke Tube: Experiments, Identification, and Modeling
IEEE Control Systems, 2015The Rijke tube [1] is a classic experiment that is relatively simple and inexpensive to build in a typical university laboratory. Despite its construction simplicity, it can serve to illustrate a wide variety of mathematical modeling, empirical identification, verification, and feedback control techniques.
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Control laboratory experiments in thermoacoustics using the Rijke tube
2014 American Control Conference, 2014We report on experiments that investigate the dynamics, identification and control of thermoacoustic phenomena in a Rijke tube apparatus. These experiments are relatively simple to construct and conduct in a typical, well-equipped undergraduate controls laboratory, yet allow for the exploration of rich and coupled acoustic and thermal dynamics, the ...
Jonathan P. Epperlein +2 more
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Backstepping Boundary Control of a Coupled Rijke Tube
2021 China Automation Congress (CAC), 2021Yang Tao, Dan Ma
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Thermoacoustic instabilities in the Rijke tube: experiments and modeling
2003Thermoacoustic instability can appear in thermal devices when unsteady heat release is coupled with pressure perturbations. This effect results in excitation of eigen acoustic modes of the system. These instabilities are important in various technical applications, for instance, in rocket motors and thermoacoustic engines.
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