Numerical Study of Mixing Two-Components Non-Newtonian Fluids in Double T-Shaped Micromixers and Multiple T-Shaped with Aligned and Non-Aligned Inputs

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NEMATOLLAHI E.; Sefid m.

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Journal: Modares Mechanical Engineering Year:2019 | Volume:19 | Issue:4 Page(s): 833-844

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Title

Numerical Study of Mixing Two-Components Non-Newtonian Fluids in Double T-Shaped Micromixers and Multiple T-Shaped with Aligned and Non-Aligned Inputs

Author(s)

NEMATOLLAHI E. | Sefid m. | Issue Writer Certificate

Keywords

Numerical Study;NonQ1

Newtonian;Double and Multiple TQ1

micromixers;NonQ1

aligned PowerQ1

lawQ1

Abstract

Passive micro-mixers have simpler manufacturing in comparison with active micro-mixers and only require energy for flow pumping. In the present study, non-Newtonian fluids and non-Newtonian power-law fluid’ s mixing behavior in passive micro-mixers have been studied. Simulation has been performed, using computational fluid dynamics commecrical code of Ansys fluent and two different approaches of two-component mixing have investigated. The first approach studies fluid’ s mixing behavior by changing flow behavior index and flow consistency index in 5 different 3D geometries as multiple T-micromixer with aligned and nonaligned inputs in one and two plane, respectively, multiple T-micromixer, double T-micromixer, and T-micromixer, while the second approach studies mixing behavior by changing flow behavior index while flow consistency index is constant in two multiple 3D geometries with non-aligned inputs. In all studies, water was used as Newtonian fluid and carboxymethyl cellulose solution was used as non-Newtonian fluid. The studied range of Reynolds number was 1 to 100. In both approaches, the results for mixing index and pressure drop for powerlaw index according to criterion are reverse of each other; it means that in the first approach, with increasing power-law index, the mixing index increased and the pressure drop decreased and in second approach, this procedure is reversed. But, procedure of non-dimensional fully developed velocities in two approaches investigated is similar in comparison to geometries with non-aligned inputs.

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APA: Copy

NEMATOLLAHI, E., & Sefid, m.. (2019). Numerical Study of Mixing Two-Components Non-Newtonian Fluids in Double T-Shaped Micromixers and Multiple T-Shaped with Aligned and Non-Aligned Inputs. MODARES MECHANICAL ENGINEERING, 19(4 ), 833-844. SID. https://sid.ir/paper/179538/en

Vancouver: Copy

NEMATOLLAHI E., Sefid m.. Numerical Study of Mixing Two-Components Non-Newtonian Fluids in Double T-Shaped Micromixers and Multiple T-Shaped with Aligned and Non-Aligned Inputs. MODARES MECHANICAL ENGINEERING[Internet]. 2019;19(4 ):833-844. Available from: https://sid.ir/paper/179538/en

IEEE: Copy

E. NEMATOLLAHI, and m. Sefid, “Numerical Study of Mixing Two-Components Non-Newtonian Fluids in Double T-Shaped Micromixers and Multiple T-Shaped with Aligned and Non-Aligned Inputs,” MODARES MECHANICAL ENGINEERING, vol. 19, no. 4 , pp. 833–844, 2019, [Online]. Available: https://sid.ir/paper/179538/en

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