HEAT-TRANSFER, FLUID-FLOW, AND INTERFACE SHAPES IN THE FLOATING-ZONE GROWTH OF TUBE CRYSTALS

NCUIR > Engineering College > National Central University Department of Chemical & Materials Engineering > journal & Dissertation > Item 987654321/26672

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/26672

Title:	HEAT-TRANSFER, FLUID-FLOW, AND INTERFACE SHAPES IN THE FLOATING-ZONE GROWTH OF TUBE CRYSTALS
Authors:	LAN,CW
Contributors:	化學工程與材料工程學系
Keywords:	RADIAL DOPANT SEGREGATION;ROTATION;SURFACE;STEADY
Date:	1994
Issue Date:	2010-06-29 17:33:52 (UTC+8)
Publisher:	中央大學
Abstract:	A computer simulation is conducted to study crystal growth of tubes by the floating-zone (FZ) method. Because the inner and outer radii of the steadily growing tube are unknown a priori and are coupled with fluid flow and heat transfer in the melt, solid/melt interfaces, and inner and outer free surfaces, the modeling of this process becomes rather difficult. A robust computer model based on the body-fitted coordinate finite-volume method (BFCFVM) and Newton's method with a preconditioned iterative linear equation solver is used to study the process. The effects of fluid flow and heat transfer on the solid/melt interfaces, free surfaces, and the dimension of the steadily grown tube crystal are demonstrated through computer simulations for both a high Prandtl-number material, i.e., NaNO3, and a low Prandtl-number material, i.e., silicon. The convection induced by both thermocapillary and buoyancy forces is considered. The effects of key process parameters are also discussed, including feeding/pulling speeds and the internally applied pressure.
Relation:	JOURNAL OF CRYSTAL GROWTH
Appears in Collections:	[National Central University Department of Chemical & Materials Engineering] journal & Dissertation

Files in This Item:

File	Description	Size	Format
index.html		0Kb	HTML	368	View/Open

社群 sharing

Loading...