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A numerical model for dendritic grow...

Raghavan, Srinivasan.

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A numerical model for dendritic growth in binary alloys.

Record Type:	Electronic resources : Monograph/item
Title/Author:	A numerical model for dendritic growth in binary alloys./
Author:	Raghavan, Srinivasan.
Description:	141 p.
Notes:	Source: Dissertation Abstracts International, Volume: 66-08, Section: B, page: 4435.
Contained By:	Dissertation Abstracts International66-08B.
Subject:	Engineering, Materials Science. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3185823
ISBN:	9780542277429

A numerical model for dendritic growth in binary alloys.
Raghavan, Srinivasan.

A numerical model for dendritic growth in binary alloys. - 141 p.

Source: Dissertation Abstracts International, Volume: 66-08, Section: B, page: 4435.

Thesis (Ph.D.)--Purdue University, 2005.

A Cellular Automaton (CA) model to track the solid-liquid interface movement combined with finite volume computation of solute diffusion has been developed to simulate dendritic structures in binary alloys. One of the significant problems in the previous CA formulations was the presence of artificial anisotropy in growth kinetics at zero and 45° introduced by a square CA grid. A new technique to track the interface movement is proposed which makes it easier to model dendritic growth in different crystallographic orientations and also model coarsening and remelting of arms.

ISBN: 9780542277429Subjects--Topical Terms:

1017759
Engineering, Materials Science.

A numerical model for dendritic growth in binary alloys.
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020 $a 9780542277429
035 $a (UnM)AAI3185823
035 $a AAI3185823
040 $a UnM $c UnM
100 1 $a Raghavan, Srinivasan. $3 1916600
245 1 2 $a A numerical model for dendritic growth in binary alloys.
300 $a 141 p.
500 $a Source: Dissertation Abstracts International, Volume: 66-08, Section: B, page: 4435.
500 $a Major Professors: Matthew J. M. Krane; David Johnson.
502 $a Thesis (Ph.D.)--Purdue University, 2005.
520 $a A Cellular Automaton (CA) model to track the solid-liquid interface movement combined with finite volume computation of solute diffusion has been developed to simulate dendritic structures in binary alloys. One of the significant problems in the previous CA formulations was the presence of artificial anisotropy in growth kinetics at zero and 45° introduced by a square CA grid. A new technique to track the interface movement is proposed which makes it easier to model dendritic growth in different crystallographic orientations and also model coarsening and remelting of arms.
520 $a The model stability with respect to the numerical parameters (grid size, Deltax and time step, Deltat) for varying operating conditions is also studied. An operating window process window in Deltat and Deltax was identified, in which the model gives a consistent set of results in dendrite tip radius and tip undercooling. Finally, model validation with experimental results from literature and analytical results for both directional and equiaxed growth conditions are presented.
590 $a School code: 0183.
650 4 $a Engineering, Materials Science. $3 1017759
650 4 $a Engineering, Metallurgy. $3 1023648
690 $a 0794
690 $a 0743
710 2 0 $a Purdue University. $3 1017663
773 0 $t Dissertation Abstracts International $g 66-08B.
790 1 0 $a Krane, Matthew J. M., $e advisor
790 1 0 $a Johnson, David, $e advisor
790 $a 0183
791 $a Ph.D.
792 $a 2005
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3185823