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Mechanical Engineering (MNE) Seminar on 9/24/21 by Dr. Yunxing Su

When: Friday, September 24, 2021
2:00 PM - 3:00 PM
Description: Mechanical Engineering (MNE) SEMINAR

September 24, 2021

2:00 p.m. - 3:00 p.m.

Charlton College of Business (CCB), Room 115

Dr. Yunxing Su, Postdoc
Department of Mechanical Engineering, Brown University

Hydrokinetic Renewable Energy Harvesting Using Oscillating Hydrofoils

Renewable energy is energy that is harvested from renewable resources, which are naturally replenished on a human timescale, such as sunlight, wind, rain, tides, waves, and geothermal heat. Compared to conventional energy (fossil fuels), renewable energy is clean in consumption. In this talk, we will focus on the tidal energy harvesting, which is essentially extracting hydrokinetic energy from moving fluids (rivers or tides) by using oscillating hydrofoils.
Experiments were conducted in a water flume with hydrofoils operating in different configurations and energy harvesting efficiency is evaluated to find the optimal conditions. I will first talk about the prescribed system, in which the hydrofoil motion is predefined by the experimentalist. In such a system, we explored the energy harvesting performance of a single hydrofoil in a confined channel and the interaction of two hydrofoil operating in a tandem configuration (in line). Then I will move to the passive system, which is achieved by using a force-feedback cyber-physical system to realize a spring-mass-damper system. In such a system, we optimized the energy harvesting performance and aeroelastic instability of a single foil under various elastic mountings. In addition, Particle Image Velocimetry (PIV) measurements of the flow fields were used to help understand the energy harvesting performance of the hydrofoil.

Dr. Yunxing Su received his Bachelor of Science at University of Science and Technology of China in 2013. Then he moved to Brown University to pursue his PhD degree in School of Engineering under the supervision of Professor Kenny Breuer focusing on renewable energy harvesting using oscillating hydrofoils. After earning his PhD degree in 2019, he joined Professor Roberto Zenit's lab at Brown University as a postdoctoral researcher working on multiphase flow, including viscous filament coiling instability, viscoelastic helical swimming, and bubbly flow in viscoelastic fluids.

For more information please contact Dr. Hangjian Ling, MNE Seminar Coordinator (

All are welcome. Students taking MNE-500 are REQUIRED to attend! All other MNE BS and MS students are encouraged to attend. All EAS students are encouraged to attend.

Light refreshments will be served.

Thank you,

Sue Cunha, Administrative Assistant
UMass Dartmouth / Mechanical Engineering Department
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