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Electronic Resource
Call number
Publication
SAND Report: SAND82-8190, July 1982.
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Language
Library's review
ABSTRACT:
Free-forced thermal convection losses from cavity-type solar receivers may be a determining factor in establishing their commercial viability. In an early review [l] of the literature it was established that there did not appear to exist, either a useful body of experimental data, or, a
Free-forced thermal convection losses from cavity-type solar receivers may be a determining factor in establishing their commercial viability. In an early review [l] of the literature it was established that there did not appear to exist, either a useful body of experimental data, or, a
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theoretical/numerical analysis of the problem, of value for bounding the magnitude and establishing the functional form of these losses. It has been the purpose of this investigation to bridge part of the gap existing between present knowledge and practical needs. To achieve this the research program has consisted of two parts. The first has as its objective the development of a numerical calculation procedure applicable to cavity-type configurations and flow conditions. The second has as its objective the provision of increased physical insight through flow visualization, and experimental measurements of quantities valuable for the development of the numerical calculation procedure of part one. The results of the first year of research have already been reported * in [l] Those corresponding to year two of research are summarized here. Although the present investigation has focussed on a configuration which is strongly two-dimensional in the mean flow structure (but turbulent in a truly three-dimensional sense), the extension of the calculation procedure to fully three-dimensional flows is straightforward, albeit laborious. Show Less