By A.S. Mujumdar and R.A. Mashelkar (Eds.)
The subject material lined during this quantity covers a large scope. It includes serious stories in lots of frontier parts of curiosity to engineers and utilized scientists. Multiphase delivery starting from floc breakage to movement via multiphase media is mentioned. tough difficulties of bubble progress and devolatilisation from polymeric melts are handled. The query of solid-liquid section swap with move is taken into account and the rising quantitation of internet drying know-how via mathematical modeling is roofed. delivery phenomena in high-tech fabrics starting from zeolite catalysts to liquid crystalline fabrics are coated and ambitious difficulties of shipping of gases in porous media, that have implications in lots of diversified applied sciences, also are addressed. eventually, functions of more recent innovations in numerical computation of delivery strategies are highlighted.
These authorative, evaluative and well timed reports of subject matters of present and strength curiosity will serve the wishes of practicing engineers in addition to educational and commercial researchers
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Extra resources for Advances in Transport Processes
Appl. Math. Comput. 2 1 , 2 0 1 - 2 1 9 . Shyy, W. 1987b Effects of O p e n Boundary Condition on Incompressible N a v i e r - S t o k e s Flow Computation: Numerical Experiments. Numer. Heat Transf. 12, 1 5 7 - 1 7 8 . Shyy, W. 1988 Computation of C o m p l e x Fluid Flows using an Adaptive Grid Method. Inter. J Numer. Methods in Fluids. 8 4 7 5 - 4 8 9 . Shyy, W. 1989 A Unified Pressure Correction Algorithm for C o m p u t i n g C o m p l e x Fluid Flows. C. A. Orzag and W. ), Lecture Notes in Engineering, Springer-Verlag, N e w York, 4 3 , 1 3 5 - 1 4 7 .
Besides presenting quantitative comparisons b e t w e e n prediction and m e a s u r e m e n t , the various m o d e l i n g issues that arise in the course of computation h a v e also been examined. It is demonstrated that substantial insight can b e gained with the aid of computational tools, thereby enabling a better understanding of the physical m e c h a n i s m s responsible for the observed p h e n o m e n a . B a s e d on the improved k n o w l e d g e , the predictive m o d e l s can b e refined, w h i c h c a n in turn p r o d u c e n e w information to further advance the s t a t e - o f - t h e - a r t .
T h e orientation of the columnar dendritic structure that does not contain copper suggests that the macroetch profile at least approximates the solidus line. T h e modified k - ε turbulence m o d e l prediction for the solidus line profile has features which correlate to features observed on the macroetch profile. 5 h solid \ w solid (a) (b) (i) isotherm (ΔΤ =50° K) (a) (b) (ii) liquid fraction coutours Figure 18. Effect of Casting S p e e d on Temperature a n d Liquid Fraction contours as -4 k - -1 1 predicted b y modified ε Turbulence M o d e l u n-4d e r Microgravity (a) Ucast = - 2 χ 1 0 m s (b) u = - 4 χ 1 0 m s"" cast portion of the pool qualitatively appears in both profiles.