Alice Hager, Christoph Kloss, Stefan Pirker, Christoph Goniva,
"Parallel Open Source CFD-DEM for Resolved Particle-Fluid Interaction"
, in Journal of Energy and Power Engineering, Vol. 7, Nummer 9, Seite(n) 1705-1712, 9-2013, ISSN: 1934-8975
Original Titel:
Parallel Open Source CFD-DEM for Resolved Particle-Fluid Interaction
Sprache des Titels:
Englisch
Original Kurzfassung:
A parallelized resolved method for the simulation of the dynamics of immersed bodies within fluids is presented. The
algorithm uses a FDM (fictitious domain method) and combines the Lagrangian DEM (discrete element method) for tracking the bodies
with a CFD (computational fluid dynamics) method for calculating the dynamics of the fluid phase. First the CFD-calculation is carried
out, disregarding the solid bodies. Afterwards, the velocity information from the bodies is included and the force, the fluid imposes onto
the bodies, is computed. The last step consists of a correction-operation which ensures the fulfillment of the conservation equation.
Dynamic local mesh refinement is used for minimizing the number of fluid cells. The CFD-DEM coupling is realized within the Open
Source framework CFDEMcoupling (www.cfdem.com), where the DEM software LIGGGHTS (www.liggghts.com) is linked against
an OpenFOAM®-based CFD solver. While both LIGGGHTS and the CFD solver were already parallelized, only a recent improvement
of the algorithm permits the fully parallel computation of resolved problems. This parallelization permits the treatment of large-scale
problems. The enclosed validation and application examples show the dynamics of the flow around settling and rotating spheres as well
as an investigation of the settling of spheres regarding the Boycott effect.
Sprache der Kurzfassung:
Englisch
Journal:
Journal of Energy and Power Engineering
Volume:
7
Number:
9
Seitenreferenz:
1705-1712
Erscheinungsmonat:
9
Erscheinungsjahr:
2013
ISSN:
1934-8975
Anzahl der Seiten:
8
Reichweite:
international
Publikationstyp:
Aufsatz / Paper in sonstiger referierter Fachzeitschrift
Forschungs-