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Complex-Impedance Modeling of Fluid-Structure Interactions in Single Celled Organisms and Bio-Inspired Robotic Swimmers

Determining the three-dimensional trajectory of a micro/nano-swimmer accurately is a key element as to achieve high precision motion control in therapeutic applications. Rigid-body kinematics of such robotic systems is dominated by viscous flows. The induced flow field around two-link swimmers is investigated with a validated computational fluid dynamics (CFD) model. Force-free-swimming constraints are employed in order to simulate motion of a spermatozoa/bacteria-like swimmer in a bounded viscous medium. The fluid resistance exerted on the swimmer’s body is quantified by an improved resistance matrix, which is embedded in a validated resistive force theory (RFT) model, based on complex-impedance analysis used in electronic circuits. Parametric studies confirmed that the hydrodynamic interaction between body and tail are of great importance in predicting the trajectories for such systems.

Dr. Ahmet Fatih Tabak

Ahmet Fatih Tabak received his B.Sc. degree in Mechatronics Engineering from Sabanci University in Spring 2005. He, then, began his M.Sc. studies at the Electronics Engineering and Computer Science Program, in Sabanci University in Fall 2005. Finally, he completed his Ph.D. studies at the same institution at the Mechatronics Engineering Program in Spring 2012. His studies are focused on microflows, micropumps and kinematic/microhydrodynamic modeling of bio-inspired swimmer robots.

Dr. Ahmet Fatih Tabak received Gürsel Sönmez Research Award for his M.Sc. studies from Sabanci University in 2007. He recently received Subrata Chakrabarti Medal for his contribution in the 7th International Conference on Fluid Structure Interaction, from Wessex Institute of Technology in 2013.  He is currently continuing his studies as an Assistant Professor of Mechatronics Engineering Program in the Faculty of Engineering and Design in Istanbul Commerce University.