27 July 1979 Schlieren Analysis Of High Current Circuit Breaker Arcs Using High Speed Photography
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Proceedings Volume 0189, 13th Intl Congress on High Speed Photography and Photonics; (1979) https://doi.org/10.1117/12.957679
Event: 13th International Congress on High Speed Photography and Photonics, 1978, Tokyo, Japan
Abstract
Schlieren photography has been used to probe the be-haviour of high current arcs in two types of a nozzle flow. For orifice nozzles the flow downstream from the throat ex-pands freely into the open air, and gross mixing between the hot arc core and the outer ambient is observed. For converging-diverging nozzles the schlieren records show a similar downstream behaviour, but upstream there is a clear cold flow surrounding the arc core. With high currents I ?. 2500 A a strong cloud of hot but non-luminous gas de-velops around the arc core and for I ?. 5000 A there is also a definite reverse flow of ablated nozzle products, which prevents effective arc interruption.
© (1979) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
A. D. Stokes, A. D. Stokes, } "Schlieren Analysis Of High Current Circuit Breaker Arcs Using High Speed Photography", Proc. SPIE 0189, 13th Intl Congress on High Speed Photography and Photonics, (27 July 1979); doi: 10.1117/12.957679; https://doi.org/10.1117/12.957679
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