[FLASH-USERS] DENS_VAR in 2D Cartesian Geometry

[Sean M. Couch]

Hi Kevin,

DENS_VAR is indeed volumetric, with units of g/cc. So in 2D Cartesian, FLASH assumes a “thickness” in the third dimension of 1. See `Grid_getSingleCellVol.F90`.

Sean



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Sean M. Couch

Assistant Professor

Department of Physics and Astronomy

Department of Computational Mathematics, Science, and Engineering

National Superconducting Cyclotron Laboratory/Facility for Rare Isotope Beams

Michigan State University

567 Wilson Rd, 3250 BPS

East Lansing, MI 48824

(517) 884-5035 —— couch at pa.msu.edu<mailto:couch at pa.msu.edu> —— www.pa.msu.edu/~couch<http://www.pa.msu.edu/~couch>

On Apr 6, 2018, 1:31 PM -0400, Kevin Whitley <kwhitle at umich.edu>, wrote:
Hi all,

I’m using 2D Cartesian geometry for my simulations and was wondering what DENS_VAR represents in this context. Is it a surface density or a volume density? Surface density makes more sense for the 2D context, but when I analyze the simulations with yt, it reports as volume density. If I am indeed setting volume density by assigning values to DENS_VAR, what is the “thickness” FLASH is assuming?


Thank you in advance for your help,
- Kevin



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