Some Properties of Explosion Generated Toroids

Fred Ryan and Joe Daugherty

ABSTRACT: The mechanism of sound production from explosion-created toroids is discussed, as well as progress in rendering them more visible. The toroids, or “smoke rings”, are easily formed by exploding a small charge at the bottom of a cylindrical barrel that is open at the top. The stability, self propulsion,  velocities, visibility, and sound frequencies are discussed. The dependency of these properties on the toroid production parameters is experimentally compared with theoretical predictions.

Keywords: toroid, vortex, smoke ring, explosion generated, sound emission, velocity, stability, frequency, visibility


Ref: JPyro, Issue 17, 2003, pp53-64
(J17_53)

© Journal of Pyrotechnics and CarnDu Ltd



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