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Dynamics of gas-solid fluidized beds through pressure fluctuations: A brief examination of methods of analysis

Srdjan Sasic (Institutionen för tillämpad mekanik, Strömningslära) ; Marc-Olivier Coppens ; John van der Schaaf ; Stefan Gheorghiu ; Filip Johnsson (Institutionen för energi och miljö, Energiteknik) ; Ruud van Ommen
International conference on circulating fluidized beds and fluidized bed technology - CFB10 (2011)
[Konferensbidrag, refereegranskat]

This paper revisits and critically examines a number of methods used for analysis of in-bed pressure signals recorded in gas-solid fluidized beds. The goal is to obtain information on the time scales of dominant phenomena present in the pressure time series of four fluidization regimes. It is demonstrated that the average cycle time represents an effective alternative to spectral analysis. In addition, we give evidence that the average cycle time yields equivalent information as some of the advanced methods of non-linear analysis (e.g. the Kolmogorov entropy). Finally, by using wavelets and wavelet packets, we show how to obtain an accurate time localization of the different frequency components present in the pressure signal.

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Denna post skapades 2011-04-04. Senast ändrad 2015-05-08.
CPL Pubid: 138582


Institutioner (Chalmers)

Institutionen för tillämpad mekanik, Strömningslära (2005-2017)
Institutionen för energi och miljö, Energiteknik (2005-2017)


Hållbar utveckling
Teknisk mekanik

Chalmers infrastruktur