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물체 모서리의 액막 뭉침 현상 완화를 위한 모서리 형상에 대한 수치해석 연구
이건강(G.K. Lee),이상혁(S.H. Lee),임기열(K.Y. Lim),배아현(A.H. Bae),허남건(N.K. Hur) 한국전산유체공학회 2012 한국전산유체공학회 학술대회논문집 Vol.2012 No.5
It is important to predict the behavior of liquid film in painting process of small plastic objects. From this process, the film sagging phenomenon around the corners of object easily occurs due to the surface tension of liquid film. In the present study, the behavior of liquid film around the corners of object was numerically simulated for the prediction of film sagging phenomenon by using the VOF method. The behavior of liquid film was predicted with the density, viscosity and surface tension coefficient of liquid film obtained from the experiment. The numerical result of behavior of liquid film was in good agreement with experimental result. In order to decrease the film sagging phenomenon, the effect of geometric factor is also analyzed. From these simulations, the modified comer shape was obtained to reduce the film sagging phenomenon. The results of present study can be provided as useful information for improving the quality of painting process.