version 4.2 authored by Udo Ziegler's avatar Udo Ziegler
......@@ -156,8 +156,7 @@ possible values or a numeric range.
physical evolution time `_C.time_max` is reached the simulation
stops ahead of schedule.
- `03` (`_C.freq_log`, `_C.freq_nir`, `_C.freq_ana`,
`_C.freq_walltime`)
- `03` (`_C.freq_log`, `_C.freq_nir`, `_C.freq_ana`, `_C.freq_walltime`)
- `_C.freq_log`: interval in units of timesteps at which the
NIRVANA log file `nirvana.log` and monitoring file `nirvana.mon`
......@@ -181,8 +180,10 @@ possible values or a numeric range.
- `01` (`_C.geometry`, `_C.omega[0-2]`)
- `_C.geometry` ({CART,CYL,SPH}): choice of coordinate system
where CART=Cartesian, CYL=cylindrical and SPH=spherical.
- `_C.geometry` ({CART,CYL,SPH}): choice of coordinate system where
- CART: Cartesian
- CYL: cylindrical
- SPH: spherical
- `_C.omega[0-2]`: components of the angular velocity vector of a
rotating frame of reference with respect to the inertial frame
......@@ -202,32 +203,32 @@ possible values or a numeric range.
- `01` (`_C.lo[0]`, `_C.up[0]`, `_C.dim[0]`)
- `_C.lo[0]`,\_C.up\[0\]: lower,upper $x$-coordinate of the
- `_C.lo[0]`,\_C.up\[0\]: lower,upper **x**-coordinate of the
computational domain.
- `_C.dim[0]`: number of *base-level* grid points in
$x$-direction. `_C.dim[0]` must be an integral factor of 4, and
**x**-direction. `_C.dim[0]` must be an integral factor of 4, and
excludes ghost cells which are automatically added by the code.
- `02` (`_C.lo[1]`, `_C.up[1]`, `_C.dim[1]`)
- `_C.lo[1]`,`_C.up[1]`: lower,upper $y$-coordinate of the
- `_C.lo[1]`,`_C.up[1]`: lower,upper **y**-coordinate of the
computational domain. In case of spherical geometry
($y\equiv \theta$) `_C.lo[1]`,`_C.up[1]` have to be specified in
units of $\pi$.
- `_C.dim[1]`: number of *base-level* grid points in
$y$-direction. `_C.dim[1]` must be a multiple factor of 4.
**y**-direction. `_C.dim[1]` must be a multiple factor of 4.
- `03` (`_C.lo[2]`, `_C.up[2]`, `_C.dim[2]`)
- `_C.lo[2]`,`_C.up[2]`: lower,upper $z$-coordinate of the
- `_C.lo[2]`,`_C.up[2]`: lower,upper **z**-coordinate of the
computational domain. In case of cylindrical- or spherical
geometry ($z\equiv \phi$) `_C.lo[2]`,`_C.up[2]` have to be
specified in units of $\pi$.
- `_C.dim[2]`: number of *base-level* grid points in
$z$-direction. `_C.dim[2]` must be a multiple factor of 4. If
**z**-direction. `_C.dim[2]` must be a multiple factor of 4. If
`_C.dim[2]`=0 the simulation is assumed 2D, i.e., axisymmetric
in case of cylindrical- or spherical coordinates.
......@@ -241,7 +242,7 @@ possible values or a numeric range.
SFC-decomposition is automatically used instead.
- `_C.bnx`,`_C.bny`,`_C.bnz`: number of domain subdivisions in
$x,y,z$-direction in case \_C.partitioning_type=BLOCK. Numbers
**x,y,z**-direction in case \_C.partitioning_type=BLOCK. Numbers
must be chosen such that the grid dimension of subdomains is a
multiple factor of 4 in each coordinate direction. Moreover, the
total number of subdomains must equal the number of MPI threads,
......@@ -341,14 +342,14 @@ possible values or a numeric range.
- `01` (`_C.imr`, `_C.amr`)
- `_C.imr` ($\le$`MAXLEVEL`): maximum refinement level for an
- `_C.imr` (<=`MAXLEVEL`): maximum refinement level for an
initially refined mesh by the user (cf. [User-defined initial
mesh refinement and refinement
control](#user-defined-initial-mesh-refinement-and-refinement-control)).
`_C.imr` cannot be larger than the macro `MAXLEVEL` defined in
the header file `nirvanaUser.h`.
- `_C.amr` ($\le$`MAXLEVEL`): allowed maximum mesh refinement
- `_C.amr` (<=`MAXLEVEL`): allowed maximum mesh refinement
level in a AMR simulations. `_C.amr` cannot be larger than the
macro `MAXLEVEL` defined in the header file `nirvanaUser.h`.
......@@ -411,14 +412,13 @@ possible values or a numeric range.
grid cell. A zero or negative value means that the
Jeans-length-based criterion is disabled.
- `_C.amr_dJeans` ($\ge 0$): tuning parameter for the
- `_C.amr_dJeans` (>=0): tuning parameter for the
Jeans-length-based mesh refinement criterion allowing a
systematic reduction of the Jeans threshold with increasing
refinement level $l$ according to the expression
`_C.amr_Jeans` $-l*$ `_C.amr_dJeans`
i.e., the local
refinement level l according to the expression
`_C.amr_Jeans`-l*`_C.amr_dJeans` i.e., the local
Jeans length becomes gradually higher resolved with increasing
$l$. `_C.amr_dJeans` must be positiv.
l. `_C.amr_dJeans` must be positiv.
**Important**: `_C.amr_dJeans` must be chosen with care such
that the actual Jeans threshold never becomes too small or
......@@ -497,7 +497,7 @@ possible values or a numeric range.
numerical technique (equiv. to genuinely 2D-HLL in the
current implementation).
- `_C.mhd_courant` (typical value: $<0.5$): CFL number in the
- `_C.mhd_courant` (typical value: <0.5): CFL number in the
MHD timestep.
- `02` (`_C.viscosity_solver`, `_C.viscosity_courant`)
......@@ -512,7 +512,7 @@ possible values or a numeric range.
Coupling to MHD integrator is via Strang-type splitting.
- `_C.viscosity_courant`: CFL-like number in the fluid viscosity
timestep. A typical value in case of STD is $<0.4$. Values much
timestep. A typical value in case of STD is <0.4. Values much
larger than 1 are possible in the case of RKL.
- `03` (`_C.diffusion_solver`, `_C.diffusion_courant`)
......@@ -529,13 +529,13 @@ possible values or a numeric range.
- `06` (`_C.heatloss_max_change`)
- `_C.heatloss_max_change` (typical value: $<0.1$): allowed
- `_C.heatloss_max_change` (typical value: <0.1): allowed
maximal relative change in the temperature due to the heatloss
source term.
- `07` (`_C.reactions_max_changeX`, `_C.reactions_max_changeT`)
- `_C.reactions_max_changeX` (typical value: $<0.1$): allowed
- `_C.reactions_max_changeX` (typical value: <0.1): allowed
maximal relative change of species number densities (or total
number density) in the time integration of the chemo-thermal
rate equations.
......@@ -546,7 +546,7 @@ possible values or a numeric range.
number density (`SXN`=1 uses individual number densities;
`SXN`=0 uses the total number density).
- `_C.reactions_max_changeT` (typical value: $<0.1$): allowed
- `_C.reactions_max_changeT` (typical value: <0.1): allowed
maximal relative change in the temperature in the time
integration of the chemo-thermal rate equations.
......@@ -635,7 +635,7 @@ possible values or a numeric range.
perpendicular to the magnetic field (meaningless in isotropic
conduction).
- `_C.conduction_coeff_sat` (typical value: $0.3$): $\Psi$ is the
- `_C.conduction_coeff_sat` (typical value: 0.3): $\Psi$ is the
parameter in the saturation heat flux model of \[[CM77](#references)\] (cf.
[physics
guide](https://gitlab.aip.de/ziegler/NIRVANA/-/tree/master/doc/pdf/PhysicsGuide.pdf)).
......@@ -675,7 +675,7 @@ possible values or a numeric range.
**Important:** Disabling the energy equation is not compatible
with the use of an adiabatic EOS, for instance.
- `_C.energy_dual_sw` ($[0,1]$; typical value: $0.01$): threshold
- `_C.energy_dual_sw` (\[0,1\]; typical value: <=0.01): threshold
value for the thermal-to-total energy density ratio in the dual
energy formalism (when `_C.energy`=DUAL).
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