Shock tube simulation using CONVERGE

In this project, a 2d shock tube of rectangular section was solved using CONVERGE. One half was filled with nitrogen (N2) at 600kPa and the other half with oxygen (O2) at 101.325kPa. A transient case solved for 3ms.

The high pressure and low pressure regions were initially closed and were opned after 1ms till the end of simulation. This was modelled using Events option available in CONVERGE.

A base grid of 0.0005m was selected in all the directions. Adaptive Mesh Refinement (AMR) depending on the species concentration of N2 was was selected. Maximum embedding level of 3 was chosen for a SGS of 0.001. This means that the mesh would refine automatically whenever the concentration of N2 changes to a value less than 0.001.

The concentration of N2 in the shock tube throughout the simulation can be seen in the below video.