Numerical simulation of transient cooling of a hot solid by an impinging free surface jet

Journal Article · Wed Dec 01 04:00:00 EST 1999 · Numerical Heat Transfer. Part A, Applications

DOI:https://doi.org/10.1080/104077899274444· OSTI ID:20005614

Fujimoto, Hitoshi; Takuda, Hirohiko; Hatta, Natsuo; Viskanta, R

In iron- and steel-making industries, jet impingement is widely used to cool hot strips and slabs. In the hot rolling process a hot strip passing through the finishing rolls is cooled along a runout table from an austenitic finishing temperature to a coiling temperature by means of impinging water jets. The upper surface of the strip is cooled by impingement of water sheets or bars, and the lower surface is cooled by water sprays. This paper treats transient cooling of a hot solid by an impinging circular free surface liquid jet. The flow and thermal fields in the liquid as well as the temperature distributions in the hot solid have been predicted numerically. The Navier-Stokes equations for incompressible fluid flow in an axisymmetric coordinate system and the transient heat conduction equation for a solid have been solved by a finite difference method. The hydrodynamics of the liquid film and the heat transfer processes have been investigated to understand the physics of the phenomena.

• Research Organization: Kyoto Univ., Sakyo (JP)
• OSTI ID: 20005614
• Journal Information: Numerical Heat Transfer. Part A, Applications, Journal Name: Numerical Heat Transfer. Part A, Applications Journal Issue: 8 Vol. 36; ISSN 1040-7782; ISSN NHAAES
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
36 MATERIALS SCIENCE
FILM COOLING
FINITE DIFFERENCE METHOD
HEAT TRANSFER
HOT WORKING
INCOMPRESSIBLE FLOW
JETS
METAL INDUSTRY
NUMERICAL ANALYSIS
TEMPERATURE DISTRIBUTION