CSIRO grassfire experiment particle placement #13327
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bjmvandongen
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The particle location in the cell only has an impact if the particle is moving . The particle only sees the cell mean quantities (temp, species, gas velocity, etc.) there is no interpolation of those for the actual particle location. |
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There is a distance weighted average taken for the gas velocity from the
nearest relevant faces/vectors in part.f90. So in that sense location would
matter for drag. I don’t believe we do the same for convection though.
…On Thu, Aug 15, 2024 at 12:30 Jason Floyd ***@***.***> wrote:
The particle location in the cell only has an impact if the particle is
moving . The particle only sees the cell mean quantities (temp, species,
gas velocity, etc.) there is no interpolation of those for the actual
particle location.
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Hi all,
I am simulating the F19 case of the CSIRO grassfire experiments.
The fuel bed height is 0.51 meters and the grid size that I use is 1 m x 1m x 1m. When I specify 1 particle per cell and also cell-centered, where is the particle placed? If the particle is placed in the center of the cell, is the fuel bed height then modelled as 1 meter or still as 0.51 meter? It does not really matter if I specify cell-centered right? because then the particle is placed randomly within the cell.
Hopefully someone can give me some clarification.
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