Fourier spectrum to recover deterministic and stochastic behavior in stirred tanks
2001 (English)In: AIChE Journal, ISSN 0001-1541, E-ISSN 1547-5905, Vol. 47, no 10, 2167-2176 p.Article in journal (Refereed) Published
Velocity data from the impeller region of Rushton and 6SRGT pilot-scale impellers were analyzed both in the frequency domain and with respect to periodicity. The four characteristic frequencies and their combination were detected from the Fourier spectrum, and the deterministic part of the signal was recovered by making the amplitude of the other frequencies zero. The deterministic part was then analyzed with tools from nonlinear theories. For the two turbine-types, the dynamics of the deterministic velocity parts were almost identical. The turbulent part of the signal could also be estimated in a similar manner.
Place, publisher, year, edition, pages
2001. Vol. 47, no 10, 2167-2176 p.
turbine-agitated tank, rushton turbine, time-series, turbulence, system, power, flow
IdentifiersURN: urn:nbn:se:kth:diva-21031ISI: 000171639400004OAI: oai:DiVA.org:kth-21031DiVA: diva2:339728
QC 201005252010-08-102010-08-10Bibliographically approved