<abstract xmlns="http://www.w3.org/1999/xhtml"> In this study, time dependent three-dimensional numerical simulations were carried out using the STHAMAS3D software in order to understand the effects of forced convection induced by mechanical stirring of the melt, on the crucible dissolution rate and on the impurities distribution in multicrystalline silicon (mc-Si) melt for different values of the diffusion coefficient.Numerical simulations were performed on a pilot scale furnace with crucible dimensions of 38x38x40cm3. The computational domain used for the local 3D-simulations consists of melt and crystal.The dissolution rate was estimated from the total mass of impurities that was found in the silicon melt after a certain period of time. The obtained results show that enhanced convection produced by a mechanical stirrer leads to a significant increase of the dissolution rate and also to a uniform distribution of impurities in the melt.</abstract>

In this study, time dependent three-dimensional numerical simulations were carried out using the STHAMAS3D software in order to understand the effects of forced convection induced by mechanical stirring of the melt, on the crucible dissolution rate and on the impurities distribution in multicrystalline silicon (mc-Si) melt for different values of the diffusion coefficient.Numerical simulations were performed on a pilot scale furnace with crucible dimensions of 38x38x40cm3. The computational domain used for the local 3D-simulations consists of melt and crystal.The dissolution rate was estimated from the total mass of impurities that was found in the silicon melt after a certain period of time. The obtained results show that enhanced convection produced by a mechanical stirrer leads to a significant increase of the dissolution rate and also to a uniform distribution of impurities in the melt.

Influence of Mechanical Stirring on the Crucible Dissolution Rate and Impurities Distribution in Directional Solidification of Multicrystalline Silicon

Faculty of Physics, West University of Timisoara, Bd. V. Pârvan 4, 300223 Timisoara, Romania

Faculty of Physics, West University of Timisoara, Bd. V. Pârvan 4, 300223Timisoara, Romania

Annals of West University of Timisoara - Physics

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

In this study, time dependent three-dimensional numerical simulations were carried out using the STHAMAS3D software in order to understand the effects of...

Influence of Mechanical Stirring on the Crucible Dissolution Rate and Impurities Distribution in Directional Solidification of Multicrystalline Silicon

Published Online: Dec 30, 2015

Page range: 27 - 37

Received: Sep 08, 2015

Accepted: Nov 21, 2015

DOI: https://doi.org/10.1515/awutp-2015-0204

Keywords
Numerical simulations, Fluid flow, Ingot casting method, Stirring, Multicrystalline silicon

© 2016

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Influence of Mechanical Stirring on the Crucible Dissolution Rate and Impurities Distribution in Directional Solidification of Multicrystalline Silicon

Published Online: Dec 30, 2015

Page range: 27 - 37

Received: Sep 08, 2015

Accepted: Nov 21, 2015

DOI: https://doi.org/10.1515/awutp-2015-0204

KeywordsNumerical simulations, Fluid flow, Ingot casting method, Stirring, Multicrystalline silicon

© 2016

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Keywords
Numerical simulations, Fluid flow, Ingot casting method, Stirring, Multicrystalline silicon