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Comparison of Experimental and Computational Particle Trajectories in a Stirred Vessel
Author(s) -
Barrue Hélène,
Xuereb Catherine,
Pitiot Pascal,
Falk Laurent,
Bertrand Joël
Publication year - 1999
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/(sici)1521-4125(199906)22:6<511::aid-ceat511>3.0.co;2-x
Subject(s) - rushton turbine , trajectory , dimensionless quantity , lagrangian particle tracking , impeller , turbulence , mechanics , particle (ecology) , flow (mathematics) , computational fluid dynamics , tracking (education) , fluent , turbine , field (mathematics) , mathematics , simulation , classical mechanics , physics , computer science , engineering , mechanical engineering , geology , psychology , pedagogy , oceanography , astronomy , pure mathematics
A particle trajectory in a turbulent flow is measured by a 3‐dimensional tracking technique and compared with the pattern calculated by a Lagrangian model. The geometry chosen is a standard vessel provided with a Rushton turbine. First, the flow field is simulated using the commercial Fluent package. The impeller global performance is determined. The dimensionless numbers are calculated: t c , N QP , N P . These results are validated by LDV data. The numerical particle trajectory is compared to the experimental trajectory, and the reliability of the numerical trajectory is proved. Finally, some news tools for analyzing the flow are presented. Useful information is included in the long particle trajectory, which enables one to compute a probability of presence. The fluid dynamic behavior is visualized by Poincaré sections.