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http://dx.doi.org/10.6112/kscfe.2014.19.4.001

NUMERICAL STUDY OF UNSTEADY HEAT TRANSFER ON MICRO HEATER UNDER HALF-CYCLE SINUSOIDAL HEAT LOAD  

Kim, M.J. (Dept. of Mechanical Engineering, Kookmin Univ.)
Lee, H.J. (Dept. of Mechanical Engineering, Kookmin Univ.)
Publication Information
Journal of computational fluids engineering / v.19, no.4, 2014 , pp. 1-7 More about this Journal
Abstract
A numerical study of transient conjugate heat transfer on micro heater in a micro-channel substrate under a sinusoidal heat load was conducted. It was found that the time constant is not affected by the maximum heating magnitude of the sinusoidal heat load. However, the time constant increases with low duration of the sinusoidal heating period and low Reynolds number. Moreover, there is a threshold where a heater temperature do not reach to time constant at low thermal diffusivity, low flow rate, and low pulse duration of the sinusoidal heating. The time constant should be considered for transient convective heat transfer under transient sinusoidal heat load in a micro heat sink.
Keywords
Transient; Sinusoidal; Micro-channel; Micro heater; Time constant;
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Times Cited By KSCI : 2  (Citation Analysis)
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