TY - GEN
T1 - Effect of dynamic perturbation and contact condition on edge-defined fiber growth characteristics
AU - Shyy, Wei
AU - Liang, Shin Jye
AU - Wei, Daniel Y.
PY - 1993
Y1 - 1993
N2 - In the present work, a thermocapillary model has been developed to simulate the dynamic characteristics of the EFG process, subject to the pull speed perturbations. The model, which is axisymmetric and appropriately scaled, solves the energy equations in both solid and melt regions separately, and tracks the movement and evolution of the interface explicitly using a combined Lagrangian/Eulerian method. In has been predicted, and observed experimentally, that the fiber diameter responds to the pull speed perturbation at the corresponding frequency, but the sensitivity of the response decay as the frequency increases. Furthermore, it has also been established that both the static and dynamic models at trijunction points cause the crystal to vary in sizes in response to the external fluctuations.
AB - In the present work, a thermocapillary model has been developed to simulate the dynamic characteristics of the EFG process, subject to the pull speed perturbations. The model, which is axisymmetric and appropriately scaled, solves the energy equations in both solid and melt regions separately, and tracks the movement and evolution of the interface explicitly using a combined Lagrangian/Eulerian method. In has been predicted, and observed experimentally, that the fiber diameter responds to the pull speed perturbation at the corresponding frequency, but the sensitivity of the response decay as the frequency increases. Furthermore, it has also been established that both the static and dynamic models at trijunction points cause the crystal to vary in sizes in response to the external fluctuations.
UR - https://www.scopus.com/pages/publications/0027852101
M3 - Conference Paper published in a book
AN - SCOPUS:0027852101
SN - 0791810046
T3 - American Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD
SP - 71
EP - 81
BT - Transport Phenomena in Nonconventional Manufacturing and Materials Processing
PB - Publ by ASME
T2 - Proceedings of the 1993 ASME Winter Annual Meeting
Y2 - 28 November 1993 through 3 December 1993
ER -