Title :
Nonlinear identification of thermoacoustic instabilities with limit cycles in a Rijke tube
Author :
Agostino, E. ; Baldini, G. ; Bittanti, S. ; Marco, A. De ; Poncia, G. ; Randoni, W. ; Scarpellini, M.
Author_Institution :
Dip. di Elettronica e Informazione, Politecnico di Milano, Italy
Abstract :
This paper deals with the development of a model of thermoacoustic instabilities, observed in a laboratory scale Rijke tube. The model is built via a thorough description of both the gas dynamics and the heat release process, which is concisely outlined. The validation is carried out on the basis of real experimental data, and it is founded on a mixed linear/nonlinear identification method with the support of the describing function theory for the detection of limit cycle behavior.
Keywords :
chemically reactive flow; combustion; flow instability; limit cycles; nonlinear estimation; pipe flow; thermoacoustics; Rijke tube; combustion systems; describing function theory; gas dynamics; heat release process; laboratory scale Rijke tube; limit cycles; mixed linear/nonlinear identification method; nonlinear identification; thermoacoustic instabilities; Damping; Ducts; Fires; Fluid dynamics; Heating; Laboratories; Limit-cycles; Missiles; Rockets; Turbines;
Conference_Titel :
Control Applications, 2002. Proceedings of the 2002 International Conference on
Print_ISBN :
0-7803-7386-3
DOI :
10.1109/CCA.2002.1038767
