Free-surface flow in horizontally rotating cylinder: experiment and simulation

International Symposium on Liquid Metal Processing & Casting 2015

材料科学;金属工艺学

Bohacek, J.^1 ; Kharicha, A.^2 ; Ludwig, A.^1 ; Wu, M.^2 ; Paar, A.^3 ; Brandner, M.^3 ; Elizondo, L.^3 ; Trickl, T.^3

Dept. of Metallurgy, Montanuniversitaet Leoben, Austria^1

Christian Doppler Lab for Advanced Simulation of Solidification and Melting, Montanuniversitaet Leoben, Austria^2

Eisenwerk Sulzau-Werfen, R. and E. Weinberger AG, Austria^3

关键词: Contact lines;    Free-surface flow;    Horizontal centrifugal castings;    Liquid layer;    New position;    Rotating cylinders;    Shallow water equations;    Working fluid;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/143/1/012036/pdf
DOI  :  10.1088/1757-899X/143/1/012036

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The horizontal centrifugal casting process targets on a liquid layer with a uniform thickness. To achieve this, the rotations of the mold have to be large enough so that the liquid can pick up the speed of the mold. In the present paper, an experiment was conducted using a laboratory plexi-glass mold with water as a working fluid. Starting with an initial volume fraction of liquid resting in the bottom of the mold, the mold rotations were gradually increased from 0 rpm to max rpm and a new position of the contact line was recorded. In addition, first critical rpm was recorded, at which the transition from the liquid pool to a uniform liquid layer occurred. While gradually going back from max rpm to 0 rpm, second critical rpm was recorded, at which the uniform liquid layer collapsed. The experiment was compared with the numerical simulation solving the modified shallow water equations using the Newton-Raphson method with the Wallington filter.