Article (Scientific journals)
A Forcing Fictitious Domain Method to Simulate Fluid-particle Interaction of Particles with Super-quadric Shape
Wu, Mingqiu; Peters, Bernhard; Rosemann, Tony et al.
2019In Powder Technology, 360 (15/January 2020), p. 264-277
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Keywords :
Immersed boundary; Super-quadric particle; Direct numerical simulation
Abstract :
[en] In this work, we develop a new framework to directly simulate super-quadric (SQ) particles in fluid flows based on a forcing fictitious domain method. Specifically, a super-quadric particle function is used to represent the particle shape of different types in a flexible manner. The immersion of particles in the fluid is handled by imposing rigid solid body motion in the particle domain, as well as adding a local forcing term to the Navier-Stokes equations by calculating the integral of both the pressure gradient and the particle velocity over the whole particle domain. Particle shapes are varied by changing the five super-quadric parameters of the SQ equation. We validate our approach by performing simulations of flow around a fixed particle and sedimentation of a particle in a channel in 2D and 3D. The validation results indicate that the current simulation results show a good agreement with experimental data. Moreover, our method is used to study the flow around fixed non-spherical particles with different orientations and particle Reynolds numbers. The particle Reynolds numbers vary from 0.1 to 3000. The super-quadric particles exemplarily considered in the current study are an ellipsoidal particle and fibre-like particles. We present the results for drag and lift coefficients at different particle orientations and different particle Reynolds numbers. The obtained results lay the foundation to apply the framework to flown through multi-particle systems in the near future.
Disciplines :
Mechanical engineering
Author, co-author :
Wu, Mingqiu ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit
Peters, Bernhard ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit
Rosemann, Tony;  Technical University of Berlin > Mechanical Process Engineering and Solid Processing
kruggel-emden, Harald;  Technical University of Berlin > Mechanical Process Engineering and Solid Processing
External co-authors :
yes
Language :
English
Title :
A Forcing Fictitious Domain Method to Simulate Fluid-particle Interaction of Particles with Super-quadric Shape
Publication date :
01 October 2019
Journal title :
Powder Technology
ISSN :
0032-5910
eISSN :
1873-328X
Publisher :
Elsevier, Lausanne, Netherlands
Volume :
360
Issue :
15/January 2020
Pages :
264-277
Peer reviewed :
Peer Reviewed verified by ORBi
Focus Area :
Computational Sciences
FnR Project :
FNR11491069 - Simulation Des Wärme Und Impulsaustausches In Bewegten, Durchströmten Schüttungen Nicht-sphärischer Partikel Mittels Umströmungsaufgelöster Dem/Cfd, 2016 (01/09/2017-31/08/2019) - Bernhard Peters
Funders :
FNR - Fonds National de la Recherche [LU]
Available on ORBilu :
since 05 October 2019

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