Investigation of the Arc-Anode Attachment Area by Utilizing a High-Speed Camera
DOI:
https://doi.org/10.14311/ppt.2016.1.1Keywords:
plasma, arc, anode, attachment, camera, waveGrant Agency of the Czech Republic under the project GA15-19444SAbstract
The arc-anode attachment in the DC plasma arc influences power distribution in the plasma, a lifespan of anode and flow structure of plasma jet. A movement of the attachment and the surrounding plasma was directly observed by using a high-speed camera (max. 1,080,000 fps). The observations were compared with cathode-anode voltage measurements (sample rate 80 MHz). We have directly measured the average velocity of the attachments and hydrodynamic waves above them, as well as the characteristic dwell times and dwell frequencies of the attachments.References
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