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A Study on Gas Flow Visualization Inside the Thermal Cutting Kerf
Dae-Won Cho,Upendra Tuladhar,Sang-Hyun Ahn,Dae-Hwan Kim,Seokyoung Ahn,Seonmin Kim,Seung-Hoon Bae,Tae-Kook Park 한국방사성폐기물학회 2022 한국방사성폐기물학회 학술논문요약집 Vol.20 No.1
In thermal cutting process, gas flow injected from the nozzle has a significant effect on the cutting materials. The gas flow is difficult to observe gases are transparent, therefore, in this study, Schlieren method was adopted to visualize the gas flow inside the kerf. The kerf shape was inserted between two slices of transparent glass in order to imitate the real cutting environment. In order to get the flow characteristics, a high speed camera was equipped and the image processing was applied to compare the before and after injection images. As a result, the method for visualizing gas flow was successfully developed and also expected to be applied to the analysis of purging gas in various welding environments.