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Lagrangian Solvers in OpenFOAM - Are all parcels modelled as point particles?

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Old   January 10, 2020, 04:39
Default Lagrangian Solvers in OpenFOAM - Are all parcels modelled as point particles?
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Hello FOAMers,

I have a rather basic question about how Lagrangian particles are modelled in a solver like reactingParcelFoam. Are the parcels necessarily modelled as point particles with the required submodels? If not, what happens when a parcel is greater than the cell size at which it finds itself in?

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Old   January 13, 2020, 03:21
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Gerhard Holzinger
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Particle location is always based on the location of the particle's center of gravity, i.e. its center, since all particles are assumed to be spherical.
Unless you are using the immersed boundary (IB) method, you violate many assumptions used in the CFD-DEM coupling, since it falls into the category of unresolved CFD-DEM. I.e. the particles are assumed to be much smaller than a cell of the mesh.
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lagrange particle, reactingparcelfoam

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