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Document type:
Konferenzbeitrag 
Author(s):
H. Mangesius; W. Polifke 
Title:
A simple state-space approach for the investigation of 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...    »
 
Book / Congress title:
Proceedings of the International Summer School and Workshop on Non-Normal and Nonlinear Effects in Aero- and Thermoacoustics (N3l) 
Year:
2010