Modelling issues in macrosegregation predictions in direct chill castings

Journal of Light Metals

Volumn 2, Issue 3 SPEC., 2002, Pages 149-159

  Venneker, B C H ^a   Katgerman, L ^b  

^a NETHERLANDS INSTITUTE FOR METALS RESEARCH   (Netherlands)

^b DELFT UNIVERSITY OF TECHNOLOGY   (Netherlands)

Author keywords

Direct chill casting; Discretisation schemes; False segregation; Macrosegregation; Modelling

Indexed keywords

COMPUTER SIMULATION; DIFFUSION IN SOLIDS; HEAT TREATMENT; SEGREGATION (METALLOGRAPHY);

MACROSEGREGATION;

METAL CASTING;

EID: 0036705317     PISSN: 14715317     EISSN: None     Source Type: Journal    
DOI: 10.1016/S1471-5317(02)00041-X     Document Type: Article

References (24)

1. Beckermann C. Modeling of macrosegregation: past, present and future. Brody H.D., Abbaschian R., Mortensen A. Merton Flemings Symposium 2000. 2000;297-310 TMS, Warrendale, PA.
2. Ferziger J.H., Peric M. Computational Methods for Fluid Dynamics. 1999;Springer-Verlag, Germany.
3. Roache P.J. Verification and Validation in Computational Science and Engineering. 1998;Hermosa publishers, USA.
4. B.C.H. Venneker, A quest for the best discretisation scheme to prevent numerical diffusion and dispersion at high Peclet number flows, NIMR Publication p.01.4.023, The Netherlands, 2001.
5. Smith R.M., Hutton A.G. The numerical treatment of advection: a performance comparison of current methods. Numerical Heat Transfer. 5:1982;439-461.
6. Raithby G.D. Skew upstream differencing schemes for problems involving fluid flow. Computer Methods in Applied Mechanics and Engineering. 9:1976;153-164.
7. D. Sidilkover, Numerical solution to steady-state problems with dis-continuities, Ph.D. thesis, Weizmann Institute of Science, Israel, 1989.
8. Zhou S., McCorquodale J.A., Ji Z. Semi-implicit skew upwind method for problems in environmental hydraulics. International Journal for Numerical Methods in Fluids. 17:1993;803-823.
9. Runchal A.K. Condif: a modified central-difference scheme for convective flows. International Journal for Numerical Methods in Engineering. 24:1987;1593-1608.
10. Darwish M.S. A new high-resolution scheme based on the normalized variable formulation. Numerical Heat Transfer, Part B. 24:1993;353-371.
11. R.K. Agarwal, A third-order-accurate upwind scheme for Navier-Stokes at high Reynolds numbers, AIAA Paper 81-0112, 1981.
12. Chakravarthy S., Osher S. Numerical experiments with the Osher upwind scheme for the Euler equations. AIAA Journal. 21:1983;1241-1248.
13. Leonard B.P. Simple high-accuracy resolution program for convective modelling of discontinuities. International Journal for Numerical Methods in Fluids. 8:1988;1291-1318.
14. Leonard B.P. A stable and accurate convective modelling procedure based on quadratic upstream interpolation. Computer Methods in Applied Mechanics and Engineering. 19:1979;59-98.
15. Roe P.L. Characteristic-based schemes for the Euler equations. Annual Review in Fluid Mechanics. 18:1986;337-356.
16. Voller V.R., Swaminathan C.R. General source-based method for solidification phase change. Numerical Heat Transfer, Part B. 19:1991;175-189.
17. Vreeman C.J., Incropera F.P. The effect of free-floating dendrites and convection on macrosegregation in direct chill cast aluminum alloys. Part II: predictions for Al-Cu and Al-Mg alloys. International Journal of Heat and Mass Transfer. 43:2000;687-704.
18. Khosla P.K., Rubin S.G. A diagonally dominant second-order accurate implicit scheme. Computers and Fluids. 2:1974;207-209.
19. Venneker B.C.H., Katgerman L. Macrosegregation during DC casting of aluminium alloys: numerical issues and the effect of metal entry. Sahm P.R., Hansen P.N., Conley J.G. Modeling of Casting, Welding and Advanced Solidification Processes IX. 2000;680-686 Shaker Verlag, Germany.
20. Jalanti T., Swierkosz M., Gremaud M., Rappaz M. Modelling of macrosegregation in continuous casting of aluminium. Ehrke K., Schneider W. Continuous Casting. 2000;191-198 Wiley-VCH, Germany.
21. Finn T.L., Chu M.G., Bennon W.D. The influence of mushy region microstructure on macrosegregation in direct chill cast aluminum-copper round ingots. Beckermann C., Bertram L.A., Pien S.J., Smelser R.E. Micro/Macro Scale Phenomena in Solidification. ASME HTD. vol. 218:1992;17-26 ASME, New York.
22. Gariepy B., Caron Y. Investigation in the effects of casting speed and metal level on the surface segregation of AA-5182. Rooy E.L. Light Metals 1991. 1991;961-971 TMS, Warrendale, PA.
23. Vreeman C.J., Schloz J.D., Krane M.J.M. Comparison of numerical models of solidification behavior in direct chill casting with experiments. Cross M., Evans J.W., Bailey C. Computational Modeling of Materials, Minerals, and Metals Processing. 2002;397-409 TMS, Warrendale, PA.
24. Yu H., Granger D.A. Macrosegregation in aluminum alloy ingot cast by the semicontinuous direct chill (DC) method. Starke E.A., Sanders T.H. Aluminum Alloys: Their Physical and Mechanical Properties. 1986;17-29 EMAS, UK.