Spontaneous symmetry breaking in 1D shock front

illinois-ceesd / mirgecom

MIRGE-Com is the workhorse simulation application for the Center for Exascale-Enabled Scramjet Design at the University of Illinois.

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Spontaneous symmetry breaking in 1D shock front #1066

Open inducer opened 2 months ago

inducer commented 2 months ago

@anderson2981 reports a 1D shock tube case meshed with structured tensor products that should obey $u(x,y)=U(x)$ for the life of the simulation, but it does not.

ideal gas
compressible
with limiting
$Q^5$

anderson2981 commented 2 months ago

comparing pressure and temperature on 2 neighboring rows of cells. note the magnitude difference when moving to p5

p4 after 1000 steps

p5 after 1000 steps