### 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.

Richard Goozee, Peter Jacobs and David Buttsworth, October 2005.