Regularities of thermoacoustic oscillations in Lehmann's system with a reverse movement of the coolant
B. I. Basok, V. V. Gotsulenko
Institute of Engineering Thermal Physics of NAS of Ukraine, Kiev
The technique is developed for calculations of boundaries of instability, frequencies and amplitudes of self-oscillations of the heat carrier, self-excited at its movement in the vertical channel when warmth from a source of constant power is locally brought to it. Unlike classical generators of thermoacoustic fluctuations: Rijke's pipe and Lehmann's system, it is supposed that the main stationary flow is collinear with gravity. To exclude a surge of self-oscillations of nature is assumed that the flow is created with a supercharger pressure of a monotonically decreasing characteristic. The resulting mathematical model allows theoretically to determine the conditions of self-excitation of self-oscillations under consideration and to assess the influence of various parameters on their shape.
thermoacoustic oscillations, limit cycle, heat-pressure characteristic, instability.
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Mathematical Models and Computer Simulations, 2017, 9:6, 669–678
B. I. Basok, V. V. Gotsulenko, “Regularities of thermoacoustic oscillations in Lehmann's system with a reverse movement of the coolant”, Matem. Mod., 29:4 (2017), 75–87; Math. Models Comput. Simul., 9:6 (2017), 669–678
Citation in format AMSBIB
\by B.~I.~Basok, V.~V.~Gotsulenko
\paper Regularities of thermoacoustic oscillations in Lehmann's system with a reverse movement of the coolant
\jour Matem. Mod.
\jour Math. Models Comput. Simul.
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