Hybrid Particle Laden Flow Modelling : A joint domain combination of Eulerian solid phase and Lagrangian discrete particle simulations

Language: English

Published by GRIN Verlag, 2013

3656501823 / 9783656501824

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Druck auf Anfrage Neuware - Printed after ordering - Doctoral Thesis / Dissertation from the year 2013 in the subject Engineering - Mechanical Engineering, grade: 1, University of Linz (Department on Particulate Flow Modelling), language: English, abstract: The numerical hybrid model EUgran+, which is an Eulerian-Eulerian granular phase model extended with models from the Eulerian-Lagrangian model for dense rapid particulate flows, is modified to account for poly-dispersed particle diameter distributions. These modifications include the implementation of I) a new poly-dispersed drag law and of II) new particle boundary conditions distinguishing between sliding and non-sliding particle-wall collisions and III) a new implementation of the population balance equation in the agglomeration model using the Eulerian-Lagrangian approach, referred to as Bus-stop model. Further, the applicability of the EUgran+ model is extended to cover dilute to dense poly-disperse particulate flows. Furthermore, this provides an improvement in the numerical simulation of dust separation and the formation of particle strands in industrial scale cyclones. In this PHD thesis, the EUgran+Poly model is validated at 3 specific cases with different mass loadings: I) poly-dispersed particle conveying in a square pipe with a 90 degree bend at low mass loading (L = 0:00206); II) a particle conveying case in a rectangular pipe with a double-loop at high mass loading (L = 1:5); III) in a vertical pipe the implementation of the agglomeration model is validated. To show the applicability of the presented models a simulation of an industrial cyclone in experimental scale is presented. The validation and application shows that considering a poly-disperse Eulerian-Eulerian granular phase improves the accordance of the simulation results with measurements significantly. Finally, the hybrid model is a good compromise for a computational efficient simulation of particulate transport and separation with differe.

Seller Inventory # 9783656501824

Title
Hybrid Particle Laden Flow Modelling : A joint domain combination of Eulerian solid phase and Lagrangian discrete particle simulations
Author
David Schellander
Publisher
GRIN Verlag
Publication year
2013
Condition
Neu
Binding
Taschenbuch
Language
English
ISBN 10
3656501823
ISBN 13
9783656501824
Item weight
236 grams
Dimensions
210x148x12 mm

AHA-BUCH GmbH

Einbeck, Germany

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