Exploding balloons in large scale shadowgraphy

On May 31, Philippe Julien from McGill's Alternative Fuels Laboratory came to our lab with a few toy balloons and a balloon inflation rig equipped with a retractable ignition sting.

We put to the test our large scale 2m-by-2m shadowgraph system to visualize methane and hydrogen-air flames.  The flow evolution is visualized with a Phantom V1210 camera.

In hydrogen-air, the flame exhibited the characteristic cellular structure.

Batman begins!

In methane, the larger flame thickness prevents hydrodynamic instabilities for curved flames.

 Hats off, methane!


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