Three-dimensional analysis of fluid flow and heat transfer in single- and two-layered micro-channel heat sinks

Numerical Study on the Performance of Double Layer Microchannel with Liquid Gallium and Water

“…The exact value may require more points or even some function relation of maximum base temperature with flow rate for PF and CF. Levac et al [23] explained this phenomena on the basis of negative flux (positive in our study). However, no such observation is made for lengths thereby favouring counter configuration in such cases.…”

“…However, for better temperature uniformity counter flow arrangement was favoured. Levac et al [23] analyzed the performance of counter and parallel flow arrangements numerically and concluded that for low Reynolds number (Re < 100), thermal resistance offered by parallel flow is less than counter flow arrangement. In terms of uniform temperature distribution, their results agreed with those of Wei et al [22].…”

Numerical analysis and parametric study of multilayered microchannel heat sinks

“…Taking the four-layered MCHS for example, when the flow configuration is changed from (0, 0, 0, 0) to (0, 1, 1, 1), the thermal resistance is reduced by 1, 1, 1) for the four-layered MCHS, which can reduce thermal resistance of the heat sink and improve the temperature uniformity on the bottom wall significantly (Table 1). Levac et al 21 and Xie et al 23 presented that for the two-layered MCHS with the same geometry and pumping power in each layer, the parallel flow is the best flow configuration to improve the cooling performance at low flow velocity, while the counter flow is the best one at high flow velocity, and it can always achieve a better temperature uniformity at both the low and the high flow velocities. Moreover, Levac et al 21 pointed out that a critical Re for transition from the parallel flow to the counter flow is 100.…”

Characteristics of entropy generation and heat transfer in double-layered micro heat sinks with complex structure

“…Levac et al [6] conducted a comparison of the performance of DL-MCHSs between parallel flow and counter flow, respectively. They found that the thermal resistance of parallel flow was lower than that of counter flow at low Reynolds number, whereas counter arrangement was found to be superior in terms of the uniformity of the bottom temperature.…”

“…They pointed out that both the temperature rise and pressure drop were substantially lower than that in SL-MCHSs. Following their works, a considerable effort has been devoted to the study of the characteristic of the flow and heat transfer in such micro heat sinks [5][6][7][8][9][10][11][12].…”