Single-phase and Two-phase Flow and Heat Transfer in Microchannel Heat Sink with Various Manifold Arrangements

The manifold microchannel (MMC) heat sink, which possesses better transfer performance and less pressure drop than the traditional has attracted much attention from researchers in recent years. But not of them, either single-phase or two-phase ones, focused on problems about flow maldistribution wall temperature nonuniformity that might ultimately lead to system breakdown. To investigate distribution MMC six types manifold, namely Z-type, C-type, H-type, U-type, ZU-type, HU-type are considered current study. All manifolds investigated cases with water, while latter three adopted HFE7100. solved self-developed codes based OpenFOAM package. arrangement a strong impact overall pumping power required. ZU-type sinks recommended be fabricated application due their small thermal resistance lower 2×10?5 m2·K/W 500 Pa. Besides, if is restriction factor system, Z-type also recommended. In cases, naturally uniform within parallel microchannels large velocity appear have higher temperatures. authors recommend using sink boiling its bottom relatively difference 2 K.