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PROF output quantity has limited functionality
PROF outputs could be used for many more quantities than solid temperature and solid mass fractions or density. Extending the usability, however, requires changing the QUANTITY labels to be consistent with other outputs, and using MATL_ID instead of QUANTITY='WOOD' type of inputs. For gas concentrations, I would add SPEC_ID.
This way, READ_PROF could call GET_QUANTITY_INDEX, like other read routines.
Any objections?
Working on it. Few issues on the way:
- Inside solid, we solve RHO_ZZ, and it would be the easiest output. I think we do not have a name for it.
- Also, how to distinguish gas and solid density, when user wants either total density (gas+solid), solid density (sum of RHO_S), or gas density (sum of SPEC_COMP%RHO_ZZ).
RHO_ZZ(N) is the QUANTITY='DENSITY', for SPEC_ID='whatever N is'. For example, SPEC_ID='SOOT' or 'METHANE'.
For 3D, the solid uses MALT_ID for the solid density and SPEC_ID for the gas density. I think that should work for 1D as well.
Have DENSITY, SOLID DENSITY and GAS DENSITY? Then MATL_ID and SPEC_ID can limit the outputs to just that material or species.
The way things are set up right now for 3D, we output using GAS_PHASE_OUTPUT the QUANTITY='SOLID CELL DENSITY'. This takes a MATL_ID. If none is given, then the total solid cell density if reported.
Would it be clearer to use 'SOLID DENSITY' in all outputs, whenever referring to solid (a MATL or all MATLs)? DENSITY alone could always mean gas.
If we want to have combined solid and gas, all gas, all solid, or any one of a solid or gas I think we need three QUANTITIES.
Maybe providing gas (total or single SPEC) and solid (total or single MATL) would be enough at this point?
The main confusion for me with "SOLID DENSITY" is that the density rho_s(n) for component n does not change. The "SOLID CELL DENSITY" is the "bulk density" in the 3D solver. I think it is important to distinguish between the material density and the bulk density of a cell (whether that is a 1D cell or a 3D cell). I am not wed to any particular notation. But 'DENSITY' and 'SOLID DENSITY' for MATL_ID are both ambiguous to me because I don't know if this is a point density or a bulk density.
I think we need to have it so that we have MASS in the cell = (RHO_S+RHO_G)*VOLUME of the cell. Both these densities are point densities integrated over the volume.
I'm kinda with Jason, that more QUANTITY options is fine. We can describe them well in the guides and know what we are getting.
OK, actually, you see how confused this makes me... what I wrote above can be confusing---it is only correct for RHO_S and RHO_G as "bulk density". So, need also the case where MASS = (RHO_S * VOL_S + RHO_G * VOL_G) where VOL_S + VOL_G = VOL_CELL
This issue is still on hold, waiting for gas transfer implementation, but kept so we remember the need