Numerical Simulation of the Flow of a Molten Blast Furnace Slag in an Open Channel ()
ABSTRACT
Despite its industrial importance, the flow of molten blast furnace slag in open channels has not been sufficiently studied. In this work, the unsteady non-uniform flow of a molten blast furnace slag in a rectangular open channel is numerically studied by solving the Saint-Venant equations by means of an explicit backwards finite difference scheme. An Arrhenius-type dependence of the viscosity of the slag on temperature is assumed. To calculate that viscosity, four temperatures are considered, namely 1450˚C, 1500˚C, 1550˚C and 1600˚C. To study the dynamic response of the system, a half-sinusoidal pulse with duration of 5 s is imposed at the channel entrance. According to the numerical simulations, for all the temperatures considered, the slag flow in the channel for an angle of 5 degrees is supercritical in nature. However, for an angle of 1 degree, the flow is transcritical, that is, it presents a transition from subcritical to supercritical.
Share and Cite:
Barron, M. , Reyes, J. and Garrido, A. (2024) Numerical Simulation of the Flow of a Molten Blast Furnace Slag in an Open Channel.
World Journal of Engineering and Technology,
12, 963-975. doi:
10.4236/wjet.2024.124059.
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