25/11/2014
NASA ADS: Unsteady thermotopography of slabs with inner cavities
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Unsteady thermotopography of slabs with inner
cavities
Carlomagno, G. M.; Berardi, P. G.
In: Associazione Italiana di Meccanica Teorica ed Applicata, National Congress, 2nd, Naples, Italy,
October 16­19, 1974, Proceedings. Volume 4. (A76­31126 14­70) Milan, Associazione Italiana di
Meccanica Teorica ed Applicata, 1974, p. 263­272. Research supported by the Consiglio Nazionale
delle Ricerche.
Numerical and experimental investigations of conductive heat transfer in slabs with inner
cavities were performed. The numerical model examined cavities with circular or square
cylindrical and spherical geometry. The initial conditions assumed a constant temperature
across the slab, while the boundary conditions assumed adiabatic walls for the cavity and
one of the slab surfaces with the other surface brought to a temperature constant in time.
A combination of the finite difference and finite element methods was used for the
analysis. The experimental tests were conducted on steel and polyester resin models with
circular cylindrical cavities. The specimens were heated on the lower surface by a steam
flow and the temperature field on the upper surface was detected using a liquid­crystal
thermal mapping procedure and a scanning infrared radiometer.
Keywords: Cavities, Conductive Heat Transfer, Metal Plates, Polyester Resins, Thermal Mapping,
Unsteady Flow, Adiabatic Conditions, Boundary Conditions, Boundary Value Problems, Circular
Cylinders, Finite Difference Theory, Finite Element Method, Infrared Radiometers, Liquid Crystals,
Steels, Wall Temperature
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http://adsabs.harvard.edu.sci­hub.org/abs/1974itaa....4..263C
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