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- Type of Document: M.Sc. Thesis
- Language: English
- Document No: 48918 (58)
- University: Sharif University of Technology, International Campus, Kish Island
- Department: Science and Engineering
- Advisor(s): Moosavi, Ali; Sadr Hosseini, Hani
- Abstract:
- In this study, two micro swimmers have been modeled using computational fluid dynamics and the motion specifications have been presented. The mechanisms can be used for different applications like drug delivery, monitoring, doing tasks in dangerous environments like robots and etc… . These moving mechanisms are inspired from a type of plankton named “cladoceran Podon Intermedius”, accordingly we have compared our results with data obtained by particle image velocimetry. For CFD simulation, an unstructured 2-dimensional mesh has been generated. Dynamic meshing has also been utilized in a meshing zone around the moving parts. Unsteady simulations were run for axisymmetric and plane symmetry configurations and led to the conclusion that the axisymmetric condition better mimics the plankton. In designing the moving parts, efforts are done to adjust them as close to the microorganism as possible. For instance, in the second mechanism, the moving part (the leg) is consisted of two parts named arm and forearm which resemble the microorganism ̛s leg to a large extent. For the leg motion and computing the forces on the body, two UDF programs were written in C language and used in the simulation process
- Keywords:
- Microswimmer ; Particle Image Velocimetery (PIV) ; Dynamic Mesh ; Simulation ; Computational Fluid Dynamics (CFD) ; Low Reynolds Number
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