Drummond Tunnel Simulations

This material supports the paper "Simulation of a complete reflected shock tunnel showing a vortex mechanism for flow contamination." Unless otherwise stated, the animations correspond to the approximately tailored condition discussed in the paper.

Diaphragm Station

• Image 1 shows development of the flow into the shock tube shortly after main diaphragm rupture. Top half of figure is a numerical schlieren while lower half shows mass fractions for the over-tailored condition.

Shock-Reflection Region

The following animations correspond to Figures 8 and 9 in the paper. They show the details of the shock-reflection process and the generation of vorticity in the nozzle-reservoir region.

• Image 2 Top half of figure is a numerical schlieren while lower half shows mass fractions.
• Image 3 Mass fractions only.
• Image 4 Numerical schlieren only.
• Image 5 Top half is accumulated vorticity, lower half is baroclinic vorticity generation.

Nozzle and Test Section

The following animations correspond to Figure 10 in the paper. They show some of the details of the shock-reflection process together with the propagation of the starting shock structure through the nozzle.

• Image 6 Numerical schlieren image showing flow establishment through the nozzle and propagation of disturbances into the test section.
• Image 7 Numerical schlieren image which has been mirror-imaged to complete the picture.
• Image 8 Mass fractions show a vortex propagating through the nozzle throat and contaminating the test-section flow.