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http://dx.doi.org/10.5228/KSPP.2005.14.3.224

Study for Permanent Mold Design Technology and Porosity Defect Prediction Method by Multi-Phase Flow Numerical Simulations  

Choi Y. S. (한국생산기술연구원)
Cho I. S. (한국생산기술연구원)
Hwang H. Y. (한국생산기술연구원)
Choi J. K. (한국생산기술연구원)
Hong J. H. (한국생산기술연구원)
Publication Information
Transactions of Materials Processing / v.14, no.3, 2005 , pp. 224-232 More about this Journal
Abstract
The high-pressure die-casting is one of the most effective methods to produce a large amount of products in short cycle time. This process, however, has a problem that the gas porosity defect appears easily. The generation of gas porosity is known mainly due to the air entrapment during the injection stage. Most of numerical simulations for the molten metal flow pattern observations have done in the treating of one phase fluid flow but the gas-liquid interface is essentially multi- phase phenomenon. In this paper, the two-phase fluid flow numerical simulation methods have been adapted to predict the gas porosity generations in the molten metal. The accuracy and the usefulness of the new simulation module have been emphasized and verified through some comparison experiments.
Keywords
Multi-Phase Fluids; Numerical Simulation; Prediction of porosity; Permanent Mold Design Technology;
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1 E. Delnoij, J.A.M. Kuipers, W.P.M. van Swaaij, 1997, Computational fluid dynamics applied to gas-liquid contactors, Chemical Engng. Sci., Vol. 52,pp. 3623-3638   DOI   ScienceOn
2 C. W Hirt, B. D. Nichols, 1981, Volume of Fluid (VOF) Method for the Dynamics of Free Boundaries, J. Comput. Phys, Vol. 39, pp. 201-225   DOI   ScienceOn
3 C. W Hirt, 1968, Heuristic stability theory for finite-difference equations, J. Comput. Phys., Vol. 2, pp. 339-355   DOI   ScienceOn
4 K. Fukizawa, H. Shiina, 1992,J. Soc. Auto. Eng. Jpn. 46(5), p. 66
5 A. Kaye, A. Street, 1982, Die Casting Metallurgy, Butterworths, London, pp. 231-235
6 C. W. Hirt, B. D. Nichols, R. S. Hotchkiss, 1980, SOLA- VOF : A solution of algorithm for transient fluid flow with multiple free boundaries, Tech. Report LA-8355, Los Alamos Scientific Laboratory
7 J. E. Welch, F. H. Harlow, J. P. Shannon, B. J. Daly, 1966, The MAC Method: A computing Technique for solving viscous, incompressible, transient fluid flow problem involving free surfaces, Tech. Report LA-3425, Los Alamos Scientific Laboratory
8 A. A. Amsden, F. H. Harlow, 1970, The SMAC Method: A numerical technique for calculating incompressible flows, Tech. Report LA-4370, Los Alamos Scientific Laboratory
9 C. W. Hirt, B. D. Nichols, N. C. Romero, 1975, SOLA-A numerical solution algorithm for transient fluid flow, Tech. Report LA-5852, Los Alamos Scientific Laboratory
10 W. S. Hwang, R. A. Stoehr, 1983, Fluid flow modeling for computer aided design of casting, J. Metals, Vol. 35, pp. 22-30
11 Jin-Young Park, Eok-Soo Kim, Ik-Min Park, 2004, Die casting process design of automobile gear housing by metal flow and solidification simulation, J. Korean Foundrymen's Society, Vol. 24, pp. 347-355
12 N. Kubo, T. Ishii, J. Kubota, N. Aramaki, 2002, Two-phase flow numerical simulation of molten steel and argon gas in a continuous casting mold, ISIJ international, Vol. 42, No. 11, pp. 1251-1258   DOI   ScienceOn
13 A. Caboussat, M. Picasso, J. Rappaz, 2005, Numerical simulation of free surface incomepressible liquid flows surrounded by compressible gas, J. Comput. Phys., Vol. 203, pp. 626-649   DOI   ScienceOn
14 Jun-Ho Hong, Young-Sim Choi, Ho-Young Hwang, Jeong-Kil Choi, 2004, Comparison study of volume-tracking methods for multi-phase flow, Proc. Modeling of Casting and Solidification Processes VI, August 8-11, Kaohsiung, Taiwan, pp. 99-106