Effect of Particle Image Velocimetry setting parameters on local velocity measurements in an agitated vessel

0501006 - ÚH 2020 RIV DE eng J - Journal Article
Šulc, R. - Ditl, P. - Jašíková, D. - Kotek, M. - Kopecký, V. - Kysela, Bohuš
Effect of Particle Image Velocimetry setting parameters on local velocity measurements in an agitated vessel.
Chemical Engineering & Technology. Roč. 42, č. 4 (2019), s. 827-834. ISSN 0930-7516. E-ISSN 1521-4125
R&D Projects: GA ČR GA16-20175S
Grant - others:GA MŠk(CZ) LO1201
Institutional support: RVO:67985874
Keywords : mixing * Rushton turbine * Particle Image Velocimetry * fluctuation velocity * fluctuation velocity gradient
OECD category: Fluids and plasma physics (including surface physics)
Impact factor: 1.543, year: 2019
Method of publishing: Open access

Although they are obtained under the same conditions, results on the flow field in an agitated vessel achieved using particle image velocimetry (PIV) may vary due to differences in the PIV conditions. The influence on turbulence characteristics of the main PIV setting parameters, i.e., PIV spatial resolution, sampling frequency, and recording time, was investigated. Tests were performed with three different liquids in a developed turbulent field for a Rushton turbine impeller using two-dimensional time-resolved PIV. To obtain the relevant velocity gradients, a minimum recording time is needed. No effect of sampling frequency was observed if the sampling frequency was higher than approximately 17 times the impeller frequency, which is about three times the impeller blade frequency.
Permanent Link: http://hdl.handle.net/11104/0295656