Interactive Dynamics of Convection and Solidification

ISBN-13: 9780792370208 / Angielski / Twarda / 2001 / 272 str.

Peter Ehrhard; David S. Riley; Paul H. Steen

Opis

Crystal growth, casting, soldering, welding, high-energy surface treatment, nuclear safety systems and geophysical flows are just a few examples where solidification and convection occur together. These processes are interactive on micro- and macroscales: flow affects the distribution of heat and species and hence the freezing process, while solidification evolves flow boundaries, as in crusting, for example, and hence can radically alter the convection. Mathematical modellers, experimentalists and applied scientists were invited to this colloquium with the aim of consolidating our understanding of such interactions, of identifying key outstanding issues, and of developing new approaches in this important area of fundamental research. Both invited and contributed papers focus on both fundamental and technologically relevant problems.

Spis treści

Preface. Part I: Microscale phenomena. 1. Flow-induced morphologies in directional solidification; S.H. Davis. 2. Localized morphologies in directional solidification of binary alloys; B. Billia, et al. 3. Long wave and short wave oscillatory patterns in rapid directional solidification; P. Metzener. 4. Stability of solidifying material in an under-cooled melt with convection; D. Johnson, R. Narayanan. 5. Time-dependent behavior of dendrites under diffusion-controlled conditions; M.E. Glicksman, et al. 6. Velocity and shape selection of dendritic crystals in a forced flow; X. Tong, et al. 7. Simulation of natural convection effects on dendritic growth; R. Tönhardt, G. Amberg. 8. Measurements of liquid diffusion coefficients; A. Hellawell. Part II: Mushy zone phenomena. 9. Interfaces on all scales; M.G. Worster. 10. Mushy zones with fully developed chimneys; T.P. Schulze, M.G. Worster. 11. Model for meso-segregation in forced convection using phase-averaging; Y. Fautrelle, et al. 12. Coupling macro and micro phenomena during solidification of alloys; V.R. Voller. 13. Mechanical characteristics of semi-solid steels; A.A. Tseng, et al. 14. Solidification in ternary Systems; A. Aitta, et al. 15. Phase transitions in liquid crystalline elastomers; P.E. Cladis. Part III: Macroscale phenomena. 16. Recent developments in modelling continuous casting of steel; W. Schneider. 17. Magnetic stirring in horizontal continuous casting;V. Noshadi. 18. Solidification-induced secondary flows in spin-casting; P.H. Steen, et al. 19. Spreading flows with solidification &endash; top crusting; M.A. Bunk, et al. 20. Melt spreading with temperature-dependent viscosity; J.R. King, et al. 21. Convection in transient flows of solidifying oxidic mixtures; C. Journeau, et al. 22. Axisymmetric spreading of melts with basal solidification; P. Ehrhard, F. Richter. 23. The wetting of metallic substrates by low melting point alloys; S.J. Meschter, et al. 24. Solidifying sessile water droplets; W.W. Schultz, et al. 25. Convection and interface shape during Czochralski crystal growth; W. Miller, U. Rehse. 26. A moving grid model for melting and solidification problems; I. Wintruff, C. Günther. 27. In-situ real-time visualization of solidifying and melting metallic alloys; J.N. Koster, H. Yin. 28. Freezing of pure melt flowing into tubes; G. Berthoud. Index.