Graduate Thesis Or Dissertation

 

An experimental investigation of natural convection heat transfer from vertical flat plates in mercury Public Deposited

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https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/r207ts606

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  • Heat transfer from a vertical flat plate in an infinite pool of mercury was investigated. Velocity profiles were measured with a hot-film anemometer and simultaneous temperature profiles measured with thermocouples in this low Prandtl number liquid metal. Constant heat flux plates at Grashof numbers of 9 x 10⁸ and 4 x 10⁷ were investigated. Pseudo-constant temperature plates at Grashof numbers of 8 x 10⁷ and 2 x 10⁷ were investigated. The velocity profiles, the first known natural convection experimental profiles reported for liquid metals, were found to be a function of both plate position and Grashof number. This relationship was predicted by available perturbation solutions for the flat plate in an infinite, low Prandtl number fluid, but not by the similarity or integral solutions. Indications are that the best analytical solutions do a poor job of predicting profiles and that natural convection heat transfer rates in liquid metals are higher than originally believed. The use of a hot-film anemometer to measure low velocities in mercury is possible, but the existence of a thermo-barrier film causes serious experimental problems which have been only partially solved.
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  • File scanned at 300 ppi (Monochrome, 8-bit Grayscale) using ScandAll PRO 1.8.1 on a Fi-6770A in PDF format. CVista PdfCompressor 5.0 was used for pdf compression and textual OCR.
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  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2014-02-20T16:41:08Z (GMT) No. of bitstreams: 1 WhiteDonald1971.pdf: 1758289 bytes, checksum: 752d0186f231afade737ee80b2bfb212 (MD5)
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