Shock bubble

Shock simulation produced with the relativistic extension to the compressible pyro code. A shock wave travelling at Mach 5 is sent towards a rotating bubble of fluid. The top plot shows the density, the bottom a passive scalar tracking the fluid that was originally in the bubble.

---

Shear simulation

Shear test simulation produced with the relativistic extension to the low Mach number pyro code. A band of fluid at the top of the domain was initialised to move towards the right, while the band of fluid at the bottom of the domain moved towards the left. The initial density was constant except for a small sinusoidal perturbation in the x-direction. The system was evolved in time, producing the vortices at the interface of the bands of fluid that can be seen in the figure.

---

Bubble

Bubble test simulation produced with the relativistic extension to the low Mach number pyro code. A bubble of hot, unburnt fluid less dense that its surroundings was placed in a fluid stratified by a weak, planar gravitational field. The fluid rises due to its buoyancy and becomes distorted.

On the left is the mass fraction of burnt material (black being completely burnt), on the right is the log temperature (the hottest material being the palest).