Study of flow uniformity within convergent microchannels with a circular manifold


Velocity distribution among microchannels has a significant effect on the cooling performance of heat transfer fluids in contact with the heat sinks. In this study, a novel circular manifold’s practical role in the fluid distribution and flow uniformity among microchannels is investigated. Twenty microchannels are placed around the circular manifold as their cross section varies with convergence or divergence angles ranging from 0 to 10°, leading to the Reynolds numbers of 10, 88, 300, 500, and 1000. The influence of the manifold geometry, microchannel characteristics, and Reynolds number on flow uniformity is investigated. The results reveal that the maximum flow uniformity is obtained for four inlets around the manifold and an outlet in its center where the convergence angle of microchannels is 6°.

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Correspondence to Morteza Bayareh.

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Mohammadali, R., Bayareh, M. & Sheikhzadeh, G.A. Study of flow uniformity within convergent microchannels with a circular manifold. J Braz. Soc. Mech. Sci. Eng. 43, 74 (2021).

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  • Circular manifold
  • Microchannel
  • Flow uniformity
  • Pressure drop