A Numerical Solution Of Heat Transfer In
Intensive Cooling Processes Under Film
Boiling Conditions
Author(s)
G.H.D. Muhlenbruch, H. Boye & J. Schmidt
Abstract
A numerical solution of heat transfer in
intensive cooling processes under film
boiling conditions
G.H.D. Muhlenbruch, H. Boye & J. Schmidt
Institute of Fluid Dynamics and Thermodynamics,
'Otto von Guericke' University of Magdeburg,
D-39016 Magdeburg, Germany
ABSTRACT
The heat transfer in an asymmetric annular flow under film boiling conditions
will be investigated at the example of the hot rolled wire cooling. The heat
transfer could be increased significantly by using turbulence bushes, which were
optimised in experiments. In order to describe the heat transfer in the intensive
cooling tube, a model was developed founded on extensive experiments. This
model bases on the description of the turbulent flow by a k, s, u V - model and
the numerical solution of the differential equation system, which describes the
energy transport in the wire and the annulus. The high values of the turbulent
heat conductivity and the high temperature gradient at the wire surface demand
a high performance of
Keywords
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