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version 4.2
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Sep 26, 2025
by
Udo Ziegler
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@@ -359,48 +359,26 @@ NIRVANA, `g` contains structural superblock information (grid dimension,
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@@ -359,48 +359,26 @@ NIRVANA, `g` contains structural superblock information (grid dimension,
spatial coordinates, etc.) as well as holds data arrays for the
spatial coordinates, etc.) as well as holds data arrays for the
following physical variables:
following physical variables:
`g->`
variable
----------------------- ----------------------------------------------------------------------
`rho[iz][iy][ix]`
mass density $
\v
arrho$
`mx[iz][iy][ix]`
$x$-momentum density $m_x$
`my[iz][iy][ix]`
$y$-momentum density $m_y$
`mz[iz][iy][ix]`
(canonical) $z$-momentum density $m_z$
`e[iz][iy][ix]`
total energy density $e$ (if energy equation)
`bx[iz][iy][ix]`
magnetic field component $B_x$ (if MHD)
`by[iz][iy][ix]`
magnetic field component $B_y$ (if MHD)
`bz[iz][iy][ix]`
magnetic field component $B_z$ (if MHD)
`phi[iz][iy][ix]`
gravitational potential $
\P
hi$ (if selfgravity)
`nX[is][iz][iy][ix]`
species number densities $n_{s}$ (if species)
`C[ic][iz][iy][ix]`
tracer variables $C_{c}$ (if tracer)
`tfx[it][iz][iy][ix]`
$x$-component ${b_x}_{t}$ of testfields fluctuations (if testfields)
`tfy[it][iz][iy][ix]`
$y$-component ${b_y}_{t}$ of testfields fluctuations (if testfields)
`tfz[it][iz][iy][ix]`
$z$-component ${b_z}_{t}$ of testfields fluctuations (if testfields)
`p[iz][iy][ix]`
thermal pressure $p$
`T[iz][iy][ix]`
temperature $T$
`et[iz][iy][ix]`
thermal energy density $
\e
psilon$ (if dual energy mode)
`ne[iz][iy][ix]`
electron number density $n_e$
|
`g->`
| variable |
|
`g->`
| variable |
|:----------------------|:-----------------------------------------------------------------------------------------|
|:----------------------|:-----------------------------------------------------------------------------------------|
|
`rho[iz][iy][ix]`
| mass density $
\r
ho$ |
|
`rho[iz][iy][ix]`
| mass density 𝜚 |
|
`mx[iz][iy][ix]`
| $x$-momentum density $m_x$ |
|
`mx[iz][iy][ix]`
|
*x*
-momentum density
*m*
<sub>
*x*
</sub>
|
|
`my[iz][iy][ix]`
| $y$-momentum density $m_y$ |
|
`my[iz][iy][ix]`
|
*y*
-momentum density
*m*
<sub>
*y*
</sub>
|
|
`mz[iz][iy][ix]`
| (canonical) $z$-momentum density $m_z$ |
|
`mz[iz][iy][ix]`
| (canonical)
*z*
-momentum density
*m*
<sub>
*z*
</sub>
|
|
`e[iz][iy][ix]`
| total energy density $e$ (if energy equation) |
|
`e[iz][iy][ix]`
| total energy density
*e*
(if energy equation) |
|
`bx[iz][iy][ix]`
| magnetic field component $B_x$ (if MHD) |
|
`bx[iz][iy][ix]`
| magnetic field component
*B*
<sub>
*x*
</sub>
(if MHD) |
|
`by[iz][iy][ix]`
| magnetic field component $B_y$ (if MHD) |
|
`by[iz][iy][ix]`
| magnetic field component
*B*
<sub>
*y*
</sub>
(if MHD) |
|
`bz[iz][iy][ix]`
| magnetic field component $B_z$ (if MHD) |
|
`bz[iz][iy][ix]`
| magnetic field component
*B*
<sub>
*z*
</sub>
(if MHD) |
|
`phi[iz][iy][ix]`
| gravitational potential $
\P
hi$ (if selfgravity) |
|
`phi[iz][iy][ix]`
| gravitational potential
*Φ*
(if selfgravity) |
|
`nX[is][iz][iy][ix]`
| species number densities $n_s$ (if species) |
|
`nX[is][iz][iy][ix]`
| species number densities
*n*
<sub>
*s*
</sub>
(if species) |
|
`C[ic][iz][iy][ix]`
| tracer variables $C_c$ (if tracer) |
|
`C[ic][iz][iy][ix]`
| tracer variables
*C*
<sub>
*c*
</sub>
(if tracer) |
|
`tfx[it][iz][iy][ix]`
| $x$-component
*b*
<sub>
*x*
</sub><sub>
*t*
</sub>
of testfields fluctuations (if testfields) |
|
`tfx[it][iz][iy][ix]`
|
*x*
-component
*b*
<sub>
*x*
</sub><sub>
*t*
</sub>
of testfields fluctuations (if testfields) |
|
`tfy[it][iz][iy][ix]`
| $y$-component
*b*
<sub>
*y*
</sub><sub>
*t*
</sub>
of testfields fluctuations (if testfields) |
|
`tfy[it][iz][iy][ix]`
|
*y*
-component
*b*
<sub>
*y*
</sub><sub>
*t*
</sub>
of testfields fluctuations (if testfields) |
|
`tfz[it][iz][iy][ix]`
| $z$-component
*b*
<sub>
*z*
</sub><sub>
*t*
</sub>
of testfields fluctuations (if testfields) |
|
`tfz[it][iz][iy][ix]`
|
*z*
-component
*b*
<sub>
*z*
</sub><sub>
*t*
</sub>
of testfields fluctuations (if testfields) |
|
`p[iz][iy][ix]`
| thermal pressure $p$ |
|
`p[iz][iy][ix]`
| thermal pressure
*p*
|
|
`T[iz][iy][ix]`
| temperature $T$ |
|
`T[iz][iy][ix]`
| temperature
*T*
|
|
`et[iz][iy][ix]`
| thermal energy density $
\e
psilon$ (if dual energy mode) |
|
`et[iz][iy][ix]`
| thermal energy density
*ε*
(if dual energy mode) |
|
`ne[iz][iy][ix]`
| electron number density $n_e$ |
|
`ne[iz][iy][ix]`
| electron number density
*n*
<sub>
*e*
</sub>
|
| index | meaning | range |
| index | meaning | range |
|:------|:-----------------------------------------|:----------------------|
|:------|:-----------------------------------------|:----------------------|
|
`ix`
| grid-index in $x$-direction | 0...
`g->nx`
|
|
`ix`
| grid-index in $x$-direction | 0...
`g->nx`
|
...
...
...
...
