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Dokumenttyp:
Zeitschriftenaufsatz 
Autor(en):
H. Mangesius; W. Polifke 
Titel:
A discrete-time, state-space approach for modelling non-normal effects in thermoacoustic systems 
Abstract:
A low-order, state-space modeling approach for thermoacoustic systems has been developed, which is based on present and past values of nodal characteristic wave amplitudes. The method allows to simulate the time evolution of the system state, but also the efficient computation of the (pseudo-)spectrum of the evolution operator. It is demonstrated by comparison with a frequency-domain "network model" that eigenmodes and asymptotic linear stability are predicted correctly. The influence of various...    »
 
Stichworte:
Discrete-time; Efficient computation; Eigen modes; Evolution operator; Frequency domains; Heat sources; Linear Stability; Network models; Non-trivial; Perturbation energy; State space approach; State-space modeling; System state; Temperature ratio; Test case; Thermoacoustic systems; Time evolutions; Transient growth; Various model parameters; Wave amplitudes 
Zeitschriftentitel:
International Journal of Spray and Combustion Dynamics (JSCD) 
Jahr:
2011 
Band / Volume:
Heft / Issue:
Seitenangaben Beitrag:
331-350 
Nachgewiesen in:
Scopus; Web of Science 
Format:
Text