Experimental and numerical study on the capillary performance of non-homogeneous micro-post arrays

Title
Experimental and numerical study on the capillary performance of non-homogeneous micro-post arrays
Author(s)
변찬김성진[김성진]
Keywords
Capillary performance; Experimental and numerical studies; Meniscus curvature; Micro-Post; Non-homogeneous; Numerical results; Solid fraction; Surface-based
Issue Date
201312
Citation
Transactions of the Korean Society of Mechanical Engineers, B, v.37, no.12, pp.1091 - 1097
Abstract
In this article, an advanced cooling surface based on micro-post arrays with non-homogeneous configurations is investigated and compared with conventional micro-post arrays with homogeneous configuration. The capillary performance of micro-post arrays are characterized using the capillary rate of rise experiments and numerical simulations which take into account the meniscus curvature. The experimental and numerical results show that that the capillary performance of the micro-post wick can be significantly enhanced, compared with the homogeneous type wick, by employing non-homogeneous configurations. The capillary performance is shown to be primarily a function of the solid fraction and increases linearly with decreasing solid fraction, regardless of the wick configuration, when the solid fraction is larger than 0.25. However, the capillary performance is found to be significantly reduced when the solid fraction falls below approximately 0.25. ? 2013 The Korean Society of Mechanical Engineers.
URI
http://hdl.handle.net/YU.REPOSITORY/28009http://dx.doi.org/10.3795/KSME-B.2013.37.12.1091
ISSN
1226-4881
Appears in Collections:
공과대학 > 기계공학부 > Articles
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