Influence of radiation energy transfer on boundary layer temperature drops

T. Kranjc; J. Peternelj

doi:10.1117/12.2026822

19 September 2013 Influence of radiation energy transfer on boundary layer temperature drops

T. Kranjc, J. Peternelj

Proceedings Volume 8867, Infrared Remote Sensing and Instrumentation XXI; 88670Y (2013) https://doi.org/10.1117/12.2026822
Event: SPIE Optical Engineering + Applications, 2013, San Diego, California, United States

Abstract

The influence of thermal radiation on wall surface temperatures in a typical stationary conjugate heat transfer problem is studied. Free convective heat transfer, accounted for phenomenologically through the introduction of heat transfer coefficients, is supplemented by surface thermal radiation. The calculations clearly indicate that surface radiation can change significantly the surface temperatures which are, in general, reduced with increasing emissivities of the walls. In particular, in the case of small convection heat transfer coefficients, small thermal transmittances of the walls and high values of emissivities, the temperature difference across the temperature boundary layers adjacent to the walls could even be reversed.

Citation Download Citation

T. Kranjc and J. Peternelj "Influence of radiation energy transfer on boundary layer temperature drops", Proc. SPIE 8867, Infrared Remote Sensing and Instrumentation XXI, 88670Y (19 September 2013); https://doi.org/10.1117/12.2026822

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