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Micromachines 2015, 6(8), 1143-1156;

Insect-Inspired Micropump: Flow in a Tube with Local Contractions

Institute for Computational Medicine, Johns Hopkins University, Baltimore, MD 21218, USA
Academic Editors: Miko Elwenspoek and Joost Lötters
Received: 20 April 2015 / Revised: 26 July 2015 / Accepted: 6 August 2015 / Published: 14 August 2015
(This article belongs to the Special Issue Biomimetic Systems)
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A biologically-inspired micropumping model in a three-dimensional tube subjected to localized wall constrictions is given in this article. The present study extends our previous pumping model where a 3D channel with a square cross-section is considered. The proposed pumping approach herein applies to tubular geometries and is given to mimic an insect respiration mode, where the tracheal tube rhythmic wall contractions are used/hypothesized to enhance the internal flow transport within the entire respiration network. The method of regularized Stokeslets-mesh-free computations is used to reconstruct the flow motions induced by the wall movements and to calculate the time-averaged net flow rate. The time-averaged net flow rates from both the tube and channel models are compared. Results have shown that an inelastic tube with at least two contractions forced to move with a specific time lag protocol can work as a micropump. The system is simple and expected to be useful in many biomedical applications. View Full-Text
Keywords: bioinspiration; insects; micropumping; biomedical applications bioinspiration; insects; micropumping; biomedical applications

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Aboelkassem, Y. Insect-Inspired Micropump: Flow in a Tube with Local Contractions. Micromachines 2015, 6, 1143-1156.

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