ENAC Seminar Series by Dr D. Muriel
Event details
| Date | 16.07.2019 |
| Hour | 09:00 › 10:00 |
| Speaker | Dr Diego Muriel |
| Location | |
| Category | Conferences - Seminars |
09:00 – 10:00 – Dr Diego Muriel
Postdoctoral Fellow, Johns Hopkins University, USA
Hydro-Kinetic Energy Harvesting Through Flexible Materials and Wave-Like Analogs
The implementation of flexible materials for micro-energy harvesting is limited by the required high flow velocities to start exploitable oscillations. Initial configurations consist of membranes or plates with minimal or no induced curvature. Upon the action of an external flow, the harvester will oscillate presenting attractive possibilities for energy extraction, but nevertheless inefficient. In this presentation, I will demonstrate that forcing a plate into a wave-like deformation reduces minimum required flow velocities and provides consistent large amplitude oscillatory motions, therefore improving the harvester performance.
First, I will present the capacity to extract energy through a self-powered water pump, and second, I will introduce a reduced-order model to explore the underlying physics based on experimental and analytical methods. I will show that the main driving mechanisms are a marginally stable deformation, a destabilizing effect of the compressive force, and an unsteady flow field that exists prior to the onset of large amplitude oscillatory motions. These results open possibilities for new configurations of energy harvesters, and show that the physical concepts of this application can be translated to areas such as locomotion and propulsion.
Postdoctoral Fellow, Johns Hopkins University, USA
Hydro-Kinetic Energy Harvesting Through Flexible Materials and Wave-Like Analogs
The implementation of flexible materials for micro-energy harvesting is limited by the required high flow velocities to start exploitable oscillations. Initial configurations consist of membranes or plates with minimal or no induced curvature. Upon the action of an external flow, the harvester will oscillate presenting attractive possibilities for energy extraction, but nevertheless inefficient. In this presentation, I will demonstrate that forcing a plate into a wave-like deformation reduces minimum required flow velocities and provides consistent large amplitude oscillatory motions, therefore improving the harvester performance.
First, I will present the capacity to extract energy through a self-powered water pump, and second, I will introduce a reduced-order model to explore the underlying physics based on experimental and analytical methods. I will show that the main driving mechanisms are a marginally stable deformation, a destabilizing effect of the compressive force, and an unsteady flow field that exists prior to the onset of large amplitude oscillatory motions. These results open possibilities for new configurations of energy harvesters, and show that the physical concepts of this application can be translated to areas such as locomotion and propulsion.
Practical information
- General public
- Free
Organizer
- ENAC
Contact
- Cristina Perez