*Sod shock tube tests*(checked in under**samples/1d-tests/sod_10**to**sod_1000**). Initial condition is a smoothed (width=0.03) isothermal pressure jump ranging from 10:1 to 1000:1.pressure jump 10:1 pressure jump 100:1 pressure jump 1000:1 ν=.02, χ=.0005, *t*=2.7:ν=.04, χ=.0005, *t*=1.9:ν=.08, χ=.0005, *t*=1.5:*Rarefaction shocks*(checked in under samples/1d-tests/expans, expans_bfield and riemann_bfield).no B-field with B-field shock with B-field cf. Fig. 1 of Falle (2002) cf. Fig. 2 of Falle (2002) cf. Fig. 6 of Falle (2002) - Conditions for non-magnetic rarefaction shock.

*Left state*: ρ=1, p=10, ux=-3.

*Right state*: ρ=.87469, p=8, ux=-2.46537.

This corresponds to s/cp=1.68805 on both sides. 800 points.

ν=0.05, χ=0.0002. - Conditions for magnetic rarefaction shock.

*Left state*: ρ=1, p=.2327, ux=-4.6985, uy=-1.085146, Bx=-0.7, By=1.9680.

*Right state*: ρ=.7270, p=.1368, ux=-4.0577, uy=-0.8349, Bx=-0.7, By=1.355.

This corresponds to s/cp=-0.5682 on both sides. 800 points.

ν=χ=η=0.07. - Conditions for magnetic Riemann problem.

*Left state*: ρ=0.5, p=10, ux=0, uy=2, Bx=2, By=2.5.

*Right state*: ρ=0.1, p=0.1, ux=-10, uy=0, Bx=2, By=2.

This corresponds to s/cp=2.38119 on the left and 1.22753 on the right. 800 points.

ν=χ=η=2. *Note*: in the tests above, uniform viscosity is used. The viscosity has to be chosen such as to cope with the strongest compression in the domain. By using a nonuniform (artificial) viscosity, both compression and expansion shocks can be made as sharp as possible.