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Dispersion of particles in anisotropic turbulent flows
This item is provided by the institution :
National Technical University of Athens
Repository :
Digital Library of National Technical University of Athens | Dspace@NTUA
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ΕΚΤ item type
Journal part
(EN)
Scientific article
(EN)
EKT year
1993
(EN)
EKT historical period
Title
Dispersion of particles in anisotropic turbulent flows (EN)
Creator
Bergeles, G (EN)
Burry, D (EN)
Description
A Lagrangian approach is used to simulate particle dispersion in anisotropic turbulent flows. Discrete particles are tracked in three dimensions, influenced by the fluid's turbulent velocity fluctuations. The fluctuations are temporally and directionally correlated through a statistical sampling method reflecting the anisotropy of the flow field. They are calculated at the discrete particle's position through a spatial correlation which takes into consideration the anisotropy of the Reynolds stresses. The method is first tested as to the performance of the temporal and directional correlation features and is then combined with a Eulerian scheme and an algebraic Reynolds stress model for the prediction of the carrier phase. The final form of the model is used to predict a two-phase turbulent round jet and a two-phase inert flow from a quarl burner, with swirl. In parallel to these, the method is compared to a previous particle-tracking method based on an isotropic hypothesis. © 1993. (EN)
Type
journalArticle (EN)
Subject
Stresses (EN)
Turbulent flow (EN)
anisotropy (EN)
turbulence (EN)
Dispersion (EN)
Lagrangian simulation (EN)
Reynolds stress (EN)
Turbulent Flow (EN)
Two-Phase Flow (EN)
turbulent velocity correlations (EN)
Simulation (EN)
Eulerian scheme (EN)
Anisotropy (EN)
two-phase flows (EN)
Anisotropic turbulent flows (EN)
Mechanics (EN)
Models (EN)
Lagrangian approach (EN)
Turbulent velocity correlations (EN)
Provider
National Technical University of Athens
Repository / collection
Digital Library of National Technical University of Athens | Dspace@NTUA
Subcollections
Κεντρική Βιβλιοθήκη Ε.Μ.Π.
Ιδρυματικό Αποθετήριο
Δημοσιεύσεις μελών Δ.Ε.Π. σε περιοδικά
Journal
International Journal of Multiphase Flow (EN)
Language
English
Issued
1993 (EN)
Identifier
http://hdl.handle.net/123456789/10931
651 (EN)
4 (EN)
664 (EN)
19 (EN)
ISI:A1993LW31000007 (EN)
0301-9322 (EN)
10.1016/0301-9322(93)90093-A (EN)
Publisher
PERGAMON-ELSEVIER SCIENCE LTD (EN)
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