physics/Hydro/HydroMain UnitSystem [STRING] ["none"] Valid Values: Unconstrained System of Units cfl [REAL] [0.8] Valid Values: Unconstrained Courant factor irenorm [INTEGER] [0] Valid Values: Unconstrained Renormalize the abundances before eos use_cma_advection [BOOLEAN] [FALSE] use_cma_flattening [BOOLEAN] [FALSE] use the flattening procedure for the abundances as described in the CMA paper use_cma_steepening [BOOLEAN] [FALSE] use_steepening [BOOLEAN] [TRUE] physics/Hydro/HydroMain/split/MHD_8Wave irenorm [INTEGER] [0] Valid Values: Unconstrained killdivb [BOOLEAN] [TRUE] small [REAL] [1.E-10] Valid Values: Unconstrained Cutoff value smalle [REAL] [1.E-10] Valid Values: Unconstrained Cutoff value for energy smallp [REAL] [1.E-10] Valid Values: Unconstrained Cutoff value for pressure smallt [REAL] [1.E-10] Valid Values: Unconstrained Cutoff value for temperature smallu [REAL] [1.E-10] Valid Values: Unconstrained Cutoff value for velocity smallx [REAL] [1.E-10] Valid Values: Unconstrained Cutoff value for abundances smlrho [REAL] [1.E-10] Valid Values: Unconstrained Cutoff value for density physics/Hydro/HydroMain/split/PPM cvisc [REAL] [0.1] Valid Values: Unconstrained Artificial viscosity constant dp_sh [REAL] [0.33] Valid Values: Unconstrained dp_sh_md [REAL] [0.33] Valid Values: Unconstrained pressure jump for multi-dimensional shock detection epsiln [REAL] [0.33] Valid Values: Unconstrained PPM shock detection parameter hy_fluxRepresentation [STRING] ["fluxes"] Valid Values: "hybrid", "fluxes", "auto" determines the nature of the data stored in flux arrays. With this parameter set to "fluxes", the fluxes and cell volumes used in the Hydro method are calculated correctly using geometry measures (in units matching those in which coordinates are represented). If hy_fluxRepresentation is "hybrid", fluxes are calculated in a simpler way; for example, the fluxes in Cartesian coordinates use the convention Face Area == 1 (and thus Cell Volume == dx during the X sweep, etc.). Both settings lead to a correct algorithm, because what is ultimately applied in the Hydro update is of the form fluxes times dt/CellVolume, so cell areas (thus fluxes) and volumes can be multiplied by an arbitrary constant (as long as it is done consistently) without changing results (except for rounding effects). The setting here must match Paramesh's understanding of what the "fluxes" are that it is being passed if Grid_conserveFluxes is called: If hy_fluxRepresentation is "fluxes", then Paramesh4 should have set consv_fluxes==.true., consv_flux_densities==.false. If hy_fluxRepresentation is "hybrid", then Paramesh4 should have set consv_fluxes==.false., consv_flux_densities==.true. Hydro_init will try to set Paramesh to the right mode if possible, this requires Paramesh to be compiled in LIBRARY mode. If this fails, the flux representation will be modified to correspond to what the Grid unit supports. A third possible value for hy_fluxRepresentation is "auto", in which case the Hydro code unit will pick either "fluxes" or "hybrid" based on geometry and support in Grid. hybrid_riemann [BOOLEAN] [FALSE] use HLLE in shocks to remove odd-even decoupling igodu [INTEGER] [0] Valid Values: Unconstrained Use Godunov method iplm [INTEGER] [0] Valid Values: Unconstrained Use linear profiles leveque [BOOLEAN] [FALSE] modify states due to gravity -- leveque's way. nriem [INTEGER] [10] Valid Values: Unconstrained No. of iterations in Riemann solver omg1 [REAL] [0.75] Valid Values: Unconstrained PPM dissipation parameter omega1 omg2 [REAL] [10.] Valid Values: Unconstrained PPM dissipation parameter omega2 ppm_modifystates [BOOLEAN] [FALSE] modify states due to gravity -- our way. rieman_tol [REAL] [1.0e-5] Valid Values: Unconstrained Converge factor for Riemann solver small [REAL] [1.E-10] Valid Values: Unconstrained Cutoff value ... DEV: for what? smalle [REAL] [1.E-10] Valid Values: Unconstrained Cutoff value for energy smallp [REAL] [1.E-10] Valid Values: Unconstrained Cutoff value for pressure smallt [REAL] [1.E-10] Valid Values: Unconstrained Cutoff value for temperature smallu [REAL] [1.E-10] Valid Values: Unconstrained Cutoff value for velocity smallx [REAL] [1.E-10] Valid Values: Unconstrained Cutoff value for abundances smlrho [REAL] [1.E-10] Valid Values: Unconstrained Cutoff value for density vgrid [REAL] [0.] Valid Values: Unconstrained Scale factor for grid velocity physics/Hydro/HydroMain/split/RHD reconType [INTEGER] [2] Valid Values: Unconstrained Order of reconstruction small [REAL] [1.E-10] Valid Values: Unconstrained Cutoff value smalle [REAL] [1.E-10] Valid Values: Unconstrained Cutoff value for energy smallp [REAL] [1.E-10] Valid Values: Unconstrained Cutoff value for pressure smallt [REAL] [1.E-10] Valid Values: Unconstrained Cutoff value for temperature smallu [REAL] [1.E-10] Valid Values: Unconstrained Cutoff value for velocity smallx [REAL] [1.E-10] Valid Values: Unconstrained Cutoff value for abundances smlrho [REAL] [1.E-10] Valid Values: Unconstrained Cutoff value for density physics/Hydro/HydroMain/unsplit/Hydro_MusclHancock LimitedSlopeBeta [REAL] [1.0] Valid Values: Unconstrained Any real value specific for the Limited Slope limiter RiemannSolver [STRING] ["Roe"] Valid Values: Unconstrained Roe, HLL, HLLC or LaxFriedrichs charLimiting [BOOLEAN] [TRUE] Apply limiting for characteristic variable entropy [BOOLEAN] [FALSE] Entropy Fix routine for the Roe Riemann solver entropyFixMethod [STRING] ["HARTENHYMAN"] Valid Values: Unconstrained Entropy fix method for the Roe Riemann solver: Harten or HartenHyman fullyLimit [BOOLEAN] [FALSE] Switch to use a full limiting on transverse flux differencing irenorm [INTEGER] [0] Valid Values: Unconstrained Renormalize abundances order [INTEGER] [2] Valid Values: Unconstrained 1st order Godunov scheme/2nd order MUSCL-Hancock scheme shockDetect [BOOLEAN] [FALSE] Switch to use a strong compressive shock detection shockInstabilityFix [BOOLEAN] [FALSE] Fix for Roe solver's carbuncle instabilty slopeLimiter [STRING] ["vanLeer"] Valid Values: Unconstrained mc, vanLeer, minmod, hybrid, limited small [REAL] [1.E-10] Valid Values: Unconstrained Cutoff value smalle [REAL] [1.E-10] Valid Values: Unconstrained Cutoff value for energy smallp [REAL] [1.E-10] Valid Values: Unconstrained Cutoff value for pressure smallt [REAL] [1.E-10] Valid Values: Unconstrained Cutoff value for temperature smallu [REAL] [1.E-10] Valid Values: Unconstrained Cutoff value for velocity smallx [REAL] [1.E-10] Valid Values: Unconstrained Cutoff value for abundances smlrho [REAL] [1.E-10] Valid Values: Unconstrained Cutoff value for density tiny [REAL] [1.e-16] Valid Values: Unconstrained A threshold value for an arbitrarily small number physics/Hydro/HydroMain/unsplit/MHD_StaggeredMesh E_modification [BOOLEAN] [TRUE] Switch for modified electric fields calculation from flux ForceHydroLimit [BOOLEAN] [FALSE] Switch to force B=0 limit, i.e., the solver will not update B fields LimitedSlopeBeta [REAL] [1.0] Valid Values: Unconstrained Any real value specific for the Limited Slope limiter RiemannSolver [STRING] ["Roe"] Valid Values: Unconstrained Roe, HLL, HLLC, HLLD or LaxFriedrichs charLimiting [BOOLEAN] [TRUE] Apply limiting for characteristic variable energyFix [BOOLEAN] [FALSE] Energy fix routine after updating face magnetic fields entropy [BOOLEAN] [FALSE] Entropy Fix routine for the Roe Riemann solver entropyFixMethod [STRING] ["HARTENHYMAN"] Valid Values: Unconstrained Entropy fix method for the Roe Riemann solver: Harten or HartenHyman facevar2ndOrder [BOOLEAN] [TRUE] Switch to use 2nd order data reconstruction-evolution of facevars fullyLimit [BOOLEAN] [FALSE] Switch to use a full limiting on transverse flux differencing irenorm [INTEGER] [0] Valid Values: Unconstrained Renormalize abundances killdivb [BOOLEAN] [TRUE] Switch for maintaing solenoidal field order [INTEGER] [2] Valid Values: Unconstrained 1st order Godunov scheme/2nd order MUSCL-Hancock scheme prolMethod [STRING] ["INJECTION_PROL"] Valid Values: Unconstrained Injection or Balsara's method in prolongation shockDetect [BOOLEAN] [FALSE] Switch to use a strong compressive shock detection shockInstabilityFix [BOOLEAN] [FALSE] Switch to enable a fix for carbuncle instability slopeLimiter [STRING] ["vanLeer"] Valid Values: Unconstrained mc, vanLeer, minmod, hybrid, limited small [REAL] [1.E-10] Valid Values: Unconstrained Cutoff value smalle [REAL] [1.E-10] Valid Values: Unconstrained Cutoff value for energy smallp [REAL] [1.E-10] Valid Values: Unconstrained Cutoff value for pressure smallt [REAL] [1.E-10] Valid Values: Unconstrained Cutoff value for temperature smallu [REAL] [1.E-10] Valid Values: Unconstrained Cutoff value for velocity smallx [REAL] [1.E-10] Valid Values: Unconstrained Cutoff value for abundances smlrho [REAL] [1.E-10] Valid Values: Unconstrained Cutoff value for density tiny [REAL] [1.e-16] Valid Values: Unconstrained A threshold value for an arbitrarily small number

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