U.S. Department of EnergyOffice of Scientific and Technical Information
Numerical investigation of coupled turbulent flow, heat transfer, and macroscopic solidification in a vertical twin-roll thin-strip caster
Abstract
A vertical twin-roll continuous thin-strip casting process for stainless steel has been mathematically modeled. The model takes into account the coupled turbulent flow, heat transfer, and macroscopic solidification aspects of the process. A low-Reynolds-number {kappa}-{var_epsilon} turbulence model was used to account for the turbulent effects. The transport equations for the wedge-shaped caster`s cavity were solved using a boundary-fitted nonorthogonal coordinate system. A control-volume-based, iterative finite difference scheme on a staggered grid was used to solve the discretized transformed equations. The SIMPLE algorithm was employed to resolve the velocity-pressure coupling in the momentum equations. The parameters examined in this study include the Darcy coefficient and turbulent damping factor for the mushy region, the roll gap, and the inlet nozzle width. The effects of these process parameters on the turbulent flow and temperature fields, the turbulent eddy viscosity distributions, and the extents of the mushy and solidified regions were ascertained. A change of the Darcy coefficient above 800 did not show any significant effect on the results. The three types of liquid-fraction-dependent turbulent damping factor used for modeling the mushy region did not show a measurable effect on the solidified shell thickness but showed a noticeable influence on the velocity and temperaturemore »
- Authors:
-
- McGill Univ., Montreal, Quebec (Canada). Dept. of Mining and Metallurgical Engineering
- Publication Date:
- Sponsoring Org.:
- Natural Sciences and Engineering Research Council of Canada, Ottawa, ON (Canada)
- OSTI Identifier:
- 532978
- Resource Type:
- Journal Article
- Journal Name:
- Numerical Heat Transfer. Part A, Applications
- Additional Journal Information:
- Journal Volume: 32; Journal Issue: 3; Other Information: PBD: 29 Aug 1997
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; 36 MATERIALS SCIENCE; STAINLESS STEELS; CASTING; NUMERICAL ANALYSIS; TURBULENT FLOW; HEAT TRANSFER; SOLIDIFICATION; MATHEMATICAL MODELS; METAL INDUSTRY
Citation Formats
Seyedein, S H, and Hasan, M. Numerical investigation of coupled turbulent flow, heat transfer, and macroscopic solidification in a vertical twin-roll thin-strip caster. United States: N. p., 1997.
Web. doi:10.1080/10407789708913889.
Seyedein, S H, & Hasan, M. Numerical investigation of coupled turbulent flow, heat transfer, and macroscopic solidification in a vertical twin-roll thin-strip caster. United States. https://doi.org/10.1080/10407789708913889
Seyedein, S H, and Hasan, M. 1997.
"Numerical investigation of coupled turbulent flow, heat transfer, and macroscopic solidification in a vertical twin-roll thin-strip caster". United States. https://doi.org/10.1080/10407789708913889.
@article{osti_532978,
title = {Numerical investigation of coupled turbulent flow, heat transfer, and macroscopic solidification in a vertical twin-roll thin-strip caster},
author = {Seyedein, S H and Hasan, M},
abstractNote = {A vertical twin-roll continuous thin-strip casting process for stainless steel has been mathematically modeled. The model takes into account the coupled turbulent flow, heat transfer, and macroscopic solidification aspects of the process. A low-Reynolds-number {kappa}-{var_epsilon} turbulence model was used to account for the turbulent effects. The transport equations for the wedge-shaped caster`s cavity were solved using a boundary-fitted nonorthogonal coordinate system. A control-volume-based, iterative finite difference scheme on a staggered grid was used to solve the discretized transformed equations. The SIMPLE algorithm was employed to resolve the velocity-pressure coupling in the momentum equations. The parameters examined in this study include the Darcy coefficient and turbulent damping factor for the mushy region, the roll gap, and the inlet nozzle width. The effects of these process parameters on the turbulent flow and temperature fields, the turbulent eddy viscosity distributions, and the extents of the mushy and solidified regions were ascertained. A change of the Darcy coefficient above 800 did not show any significant effect on the results. The three types of liquid-fraction-dependent turbulent damping factor used for modeling the mushy region did not show a measurable effect on the solidified shell thickness but showed a noticeable influence on the velocity and temperature distributions in both liquid and mushy regions. For a fixed width of the nozzle, an increase in the roll gap increased the penetration depth of the plunging inlet jet but decreased the extent of the mushy region. The solidified shell profile was insensitive to the change of the roll gap. For a fixed roll gap, an increase in the width of the nozzle decreased the penetration depth of the nozzle but increased the extent of the mushy region, while the solidified shell thickness remained practically unaffected.},
doi = {10.1080/10407789708913889},
url = {https://www.osti.gov/biblio/532978},
journal = {Numerical Heat Transfer. Part A, Applications},
number = 3,
volume = 32,
place = {United States},
year = {Fri Aug 29 00:00:00 EDT 1997},
month = {Fri Aug 29 00:00:00 EDT 1997}
}
Find in Google Scholar
Search WorldCat to find libraries that may hold this journal