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The flow field and mixing performance of a raccoon micromixer with sinusoidal wall zeta potential is explored numerically by varying the dimensionless amplitude \((\alpha )\) and wave number (n) of the wavy channel in the physically justified range. It is found that the dimensionless recirculation velocity (UR) increases with \(\alpha\) and is maximum for n = 4 with percentage decrease of 86.93% when n increases from n = 4 to n = 20 for \(\alpha = 0.25\) . The dimensionless flow rate \((\dot{\forall })\) is found to be minimum in cases where UR is maximum, and the percentage increase in \(\dot{\forall }\) is 97.63% when n increases from n = 4 to n = 20 for \(\alpha = 0.25\) . In addition, the mixing efficiency is found to increase with \(\alpha\) and becomes maximum for n = 10.

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Effect of Surface Charge Heterogeneities on the Electroosmotic Mixing Performance in a Raccoon Micromixer with Sinusoidal Zeta Potential

  • 会议论文

  • 发表日期：

    2025年

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  • Anindya Nath,
  • Sukumar Pati,
  • László Baranyi

摘要

The flow field and mixing performance of a raccoon micromixer with sinusoidal wall zeta potential is explored numerically by varying the dimensionless amplitude \((\alpha )\) and wave number (n) of the wavy channel in the physically justified range. It is found that the dimensionless recirculation velocity (UR) increases with \(\alpha\) and is maximum for n = 4 with percentage decrease of 86.93% when n increases from n = 4 to n = 20 for \(\alpha = 0.25\) . The dimensionless flow rate \((\dot{\forall })\) is found to be minimum in cases where UR is maximum, and the percentage increase in \(\dot{\forall }\) is 97.63% when n increases from n = 4 to n = 20 for \(\alpha = 0.25\) . In addition, the mixing efficiency is found to increase with \(\alpha\) and becomes maximum for n = 10.