Insect-Inspired Micropump: Flow in a Tube with Local ContractionsReport as inadecuate

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Institute for Computational Medicine, Johns Hopkins University, Baltimore, MD 21218, USA

Academic Editors: Miko Elwenspoek and Joost Lötters

Abstract 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

Author: Yasser Aboelkassem



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