Study of mixing in circular unbalanced split &amp; recombine micromixer

Husain, Jafar; Ansari, Mubashshir Ahmad

doi:10.1088/1757-899x/404/1/012032

Cited by 2 publications

(1 citation statement)

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“…Researchers have used rhombic subchannels to provide better mixing. 25 Husain and Ansari 26 compared the mixing in an unbalanced split and recombine (SAR) micromixer to that of a balanced collision micromixer and observed a better mixing in an unbalanced SAR micromixer. Motivating by the fact that the serpentine shape of micromixers can create chaotic advection in fluids, various serpentine micromixers having different types of segments are designed and analyzed; for example, C-shaped segments, 27 L-shaped segments, 28 and OH shaped segments.…”

Section: Introductionmentioning

confidence: 99%

Mixing characteristics and pressure drop analysis in a spiral micromixer

Tripathi

Patowari

Pati

2022

Proceedings of the Institution of Mechanical Engineers, Part E:

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In this work, numerical computations are performed to analyze the mixing characteristics and pressure drop in a spiral micromixer. The effects of variation in width and depth of the micromixer are investigated for Reynolds number ( Re) in the range of 0.1 ≤ Re≤100. Results are enumerated in terms of mass contours, streamlines, mixing index and pressure drop. It is observed that the designed spiral micromixer provides a better mixing for both low and high Re values, and moreover, the mixing index remains almost the same with the variation of the depth and width of the mixer for Re > 50. The mixing index first decreases with Re, reaches a minimum value, and thereafter again increases with a further increase in Re in the range of 0.1 ≤ Re≤50. For intermediate Reynolds number, a high mixing index is observed in micromixer having higher depth and lower width. Although the driving pressure force increases with the increase in Reynolds number, it decreases with the increase in width and depth of the micromixer.

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