Nick Sirmas completes his PhD - seminal work on shock instability in dissipative gases

Today marks the final submission of Nick's seminal PhD thesis on shock instability in gases with non-elastic collisions. 

cheers to the Radulescu-Sirmas (Sirmas-Radulescu?) instability!
very proud of this guy!
The shock instability captured via molecular dynamics in gases with inelastic collisions (bottom) can only be recovered at the continuum scale if molecular fluctuations are included in a Navier Stokes (middle).  Absence of viscous terms (top) cannot dissipated the fluctuations, and unphysical mixing ensues.   

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