Publication detail
Simulation of Heat Transfer Under Air-Water Cooling Jets
KAVIČKA, F. ŠTĚTINA, J. SEKANINA, B. MASARIK, M.
Czech title
Modelování přenosu tepla pod vodo-vzdušnými chladicími tryskami
English title
Simulation of Heat Transfer Under Air-Water Cooling Jets
Type
conference paper
Language
en
Original abstract
The solidification and cooling of a continuously cast billet, slab or cylinder (generally a concasting) is a very complicated problem of 3-D transient heat and mass transfer. The solving of such a problem is impossible without numerical models of the temperature field. This paper is focused on the derivation of boundary conditions, i.e. the values of the heat transfer coefficient (HTC) on all CCM boundaries. The definition of boundary conditions is the most difficult part of the investigation of the thermokinetics of this process. The boundary conditions of the numerical model of the temperature field of the concasting are defined as the transfer of heat by convection. This HTC includes the so-called reduced convection coefficient corresponding to heat transfer by radiation. This paper therefore continues with a discussion on heat transfer coefficients under air-water cooling jets, which spray the concasting in the so-called secondary-cooling zone.
Czech abstract
Řešení tuhnutí a chlazení kontinuálně odlévaných ocelových sochorů, bram a válců není možné bez numerického modelu teplotního pole. Příspěvek je zaměřen na odvození okrajových podmínek, tedy součinitele přestupu tepla, který je definován jako součinitel přenosu tepla vedením, zahrnujícím v sobě i vliv radiace.
English abstract
The solidification and cooling of a continuously cast billet, slab or cylinder (generally a concasting) is a very complicated problem of 3-D transient heat and mass transfer. The solving of such a problem is impossible without numerical models of the temperature field. This paper is focused on the derivation of boundary conditions, i.e. the values of the heat transfer coefficient (HTC) on all CCM boundaries. The definition of boundary conditions is the most difficult part of the investigation of the thermokinetics of this process. The boundary conditions of the numerical model of the temperature field of the concasting are defined as the transfer of heat by convection. This HTC includes the so-called reduced convection coefficient corresponding to heat transfer by radiation. This paper therefore continues with a discussion on heat transfer coefficients under air-water cooling jets, which spray the concasting in the so-called secondary-cooling zone.
Keywords in Czech
Kontinuální odlévání, okrajové podmínky, chladicí charakteristiky
Keywords in English
Concast slab, boundary conditions, cooling characteristics
RIV year
2012
Released
25.04.2012
Publisher
University of Žilina
Location
Žilina
ISBN
978-80-554-0516-2
Book
XVIII. International Scientific Conference The Application of Experimental and Numerical Methods in Fluid Mechanics and Energy 2012
Edition number
1
Pages from–to
128–135
Pages count
8
BIBTEX
@inproceedings{BUT92059,
author="František {Kavička} and Josef {Štětina} and Bohumil {Sekanina} and Miloš {Masarik},
title="Simulation of Heat Transfer Under Air-Water Cooling Jets",
booktitle="XVIII. International Scientific Conference The Application of Experimental and Numerical Methods in Fluid Mechanics and Energy 2012",
year="2012",
month="April",
pages="128--135",
publisher="University of Žilina",
address="Žilina",
isbn="978-80-554-0516-2"
}