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Update 3.2 User interfaces
authored
Jan 09, 2021
by
Udo Ziegler
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3-NIRVANA-user-guide/3.2-User-interfaces.md
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@@ -969,9 +969,9 @@ where (*Â*<sub>*x*</sub>, *Â*<sub>*y*</sub>, *Â*<sub>*z*</sub>) denote
the path integrals
over corresponding cell edges. The difference operator
*Δ*
<sub>
`i`
*y*
</sub>
, for instance, is given by
*Δ*
<sub>
`i
y
`
</sub>
, for instance, is given by
*Δ*
<sub>
`iy`
</sub>
*Â*
<sub>
*x*
</sub>
=
*Â*
<sub>
*x*
</sub>
(
`ix`
,
`iy`
+1,
`
`
iz
`) − *Â*<sub>*x*</sub>(`
ix
`,`
iy
`,`
iz
`)
*Δ*
<sub>
`iy`
</sub>
*Â*
<sub>
*x*
</sub>
=
*Â*
<sub>
*x*
</sub>
(
`ix`
,
`iy`
+1,
`iz`
) −
*Â*
<sub>
*x*
</sub>
(
`ix`
,
`iy`
,
`iz`
)
and similarly for others. If the
*Â*
’s are
*unambiguously*
computed (or
approximated) on coinciding cell edges in the grid hierarchy, the
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@@ -1011,15 +1011,15 @@ domain of length *L* (given by `_C.up[0]-_C.lo[0]`):
𝜚 = 𝜚
<sub>
0
</sub>
**m** = 𝜚<sub>0</sub>(−sin(2*π*
*y*/*L*),sin(2*π*
*x*/*L*),0)
**m**
= 𝜚
<sub>
0
</sub>
(−sin(2
*π*
*y*
/
*L*
),sin(2
*π*
*x*
/
*L*
),0)
**B** = *B*<sub>0</sub>(−sin(2*π*
*y*/*L*),sin(4*π*
*x*/*L*),0)
**B**
=
*B*
<sub>
0
</sub>
(−sin(2
*π*
*y*
/
*L*
),sin(4
*π*
*x*
/
*L*
),0)
*e* = *p*<sub>0</sub>/(*γ*
−
1) + **m**<sup>2</sup>/(2𝜚) + **B**<sup>2</sup>/(2*μ*)
*e*
=
*p*
<sub>
0
</sub>
/(
*γ*
−
1) +
**m**
<sup>
2
</sup>
/(2𝜚) +
**B**
<sup>
2
</sup>
/(2
*μ*
)
where 𝜚<sub>0</sub>
=
2.77778, *p*<sub>0</sub>
=
5/3 and
*B*<sub>0</sub>
=
1. The adiabatic index *γ*
=
5/3 and the magnetic
permeability *μ*
=
1.
where 𝜚
<sub>
0
</sub>
=
2.77778,
*p*
<sub>
0
</sub>
=
5/3 and
*B*
<sub>
0
</sub>
=
1. The adiabatic index
*γ*
=
5/3 and the magnetic
permeability
*μ*
=
1.
void configUser(GRD **gm)
/**
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@@ -1092,10 +1092,7 @@ expression *a*<sup>2</sup> + *b*<sup>2</sup> + *c*<sup>2</sup>.
IC for the shock-cloud interaction problem simulated in a Cartesian box
given by (
*x*
,
*y*
,
*z*
) ∈
\[
− 1/2, 1/2
\]
<sup>
3
</sup>
:
$$(\\varrho,p,v\_x,v\_y,v\_z,B\_x,B\_y,B\_z)=\\left\\{\\begin{array}{ll}
(3.86859,167.345,0,0,0,0,2.1826182,-2.1826182) & x<0.1\\\\
(1,1,-11.2536,0,0,0,0.56418958,0.56418958) & x\\ge 0.1
\\end{array}\\right.$$
At
**x**
= (0.3, 0, 0) a spherical clump with radius 0.15 and density of
10 is embedded and co-moving with its surrounding flow under the
assumption of pressure equilibrium. The adiabatic index
*γ*
= 5/3 and
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@@ -1201,7 +1198,7 @@ magnetic permeability *μ* = 1.
return;
}
##
#
Defining boundary conditions
## Defining boundary conditions
A superblock
`g`
includes up to 3 ghost cells per side per coordinate
direction beyond its active region. The number of ghost cells depends on
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