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http://dx.doi.org/10.3795/KSME-B.2014.38.1.001

Thermo-Hydraulic Characteristics of Two-Dimensional Wavy Channels with Different Shape Parameters  

Kim, Ki-Wan (Agency for Defense Development)
Kim, Sun-Ju (Agency for Defense Development)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.38, no.1, 2014 , pp. 1-8 More about this Journal
Abstract
Two-dimensional laminar numerical analyses were carried out for investigating the thermo-hydraulic characteristics of wavy channels with different shape parameters ($0.5{\leq}{\in}{\leq}1.5$, $0.1{\leq}{\gamma}{\leq}0.4$). PAO (polyalphaolefin), which is used for electronics cooling, is considered as the working fluid. In addition, constant properties, periodically developed flow, and uniform channel wall temperature conditions are assumed. Streamline and temperature fields, isothermal Fanning friction factors, and Colburn factors are presented for different Reynolds numbers in the laminar region ($1{\leq}Re{\leq}1000$). The results show that heat transfer is enhanced when the channel corrugation ratio (${\gamma}$) is large and channel spacing ratio (${\in}$) is small in the low Reynolds number region (Re < 50) and when ${\in}$ and ${\gamma}$ are large in the high Reynolds number region ($Re{\geq}50$).
Keywords
Wavy Channel; Laminar Flow; Avionics Cooling; Periodic Fully Developed Flow;
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