Mastroianni, Michael-Anthony
ORCID: https://orcid.org/0009-0001-2983-1225
(2025)
Experimental Investigation of the Flow Generated by a Flexible, Flapping Membrane based on a Soft Electromagnetic Actuator.
Masters thesis, Concordia University.
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Abstract
Smart actuators combine soft robotic components and stimuli-responsive materials known as smart materials. Smart actuators have innovated fluid pumps and implemented mostly for micro-scale delivery. Fluid pumping at larger scales has been possible due to novel devices such as the CorWave LVAD. This device utilizes soft robot elements based on the flapping motion of fish. Aquatic locomotion mechanisms have been well understood via the study of mechanical foils; flow characteristics in their wake are the important link. There remains limited understanding in the wake characteristics generated by the CorWave and flapping foil pumps. We aim in this fundamental study to uncover the flow physics generated by a fully flexible, flapping membrane inspired by the CorWave. We selected a soft electromagnetic actuator (SEMA), enabled by liquid metal, and integrate it in our design inspired from an original prototype. A 2D-DPIV investigation examined the flow generated by the flapping membrane in an open channel flow when placed at the free surface of a quiescent fluid. Velocity, streamwise components and vorticity are extracted from the wake in experiments defined by actuation current, actuation frequency and channel width. A custom fabrication process yields a SEMA membrane with an electrical resistance of R=0.248 Ω and a <10% deviation across all test combinations. The wake’s behaviour yields three types of flows classified as: i) propagating, ii) non-propagating and iii) reverse. Their relationship with the actuation frequency and channel width indicated a reverse flow coinciding at f=3 Hz and suggested a flow regime transition at f=2 Hz.
| Divisions: | Concordia University > Gina Cody School of Engineering and Computer Science > Mechanical, Industrial and Aerospace Engineering |
|---|---|
| Item Type: | Thesis (Masters) |
| Authors: | Mastroianni, Michael-Anthony |
| Institution: | Concordia University |
| Degree Name: | M.A. Sc. |
| Program: | Mechanical Engineering |
| Date: | September 2025 |
| Thesis Supervisor(s): | Kadem, Lyes and Bodkhe, Sampada |
| ID Code: | 996359 |
| Deposited By: | Michael-Anthony Mastroianni |
| Deposited On: | 29 Jun 2026 14:47 |
| Last Modified: | 29 Jun 2026 14:47 |
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