Adaptive Composite Marine Propulsors and Turbines: Progress and Challenges

Date: 
Friday, April 7, 2017 - 2:30pm
Location: 
3113 Etcheverry Hall
Speaker: 
Professor Yin Lu (Julie) Young

Department of Naval Architecture & Marine Engineering

University of Michigan

About: 

E-201 Ocean Engineering Seminar Series, Spring 2017

 

*Please note that this seminar has been moved from 3110 Etcheverry Hall, to 3113 Etcheverry Hall.*

 

2:00 - 2:30pm Beverages & Refreshments

2:30 - 4:00pm Seminar

 

In this seminar, the advantages, state-of-the-art, and current challenges in the field of adaptive composite marine propulsors and turbines are reviewed. Adaptive composites are used in numerous marine technologies, including propulsive devices and control surfaces for marine vessels, offshore platforms, unmanned surface and underwater vehicles, and renewable energy harvesting devices. In the past, most marine propulsors and turbines have been designed as rigid bodies, simplifying the design and analysis process; however, this can lead to significant performance degradation when operating in off design conditions or in spatially or temporally varying flows. With recent advances, it is possible to take advantage of the flexibility and anisotropic properties of composites to enable passive morphing capabilities to delay cavitation and improve overall energy efficiency, agility, and dynamic stability. Moreover, active materials can be embedded inside composites to enable energy harvesting, in situ health and condition monitoring, mitigation and control of flow-induced vibrations, and further enhancements of system performance. However, care is needed in the design and testing of adaptive composite marine propulsors and turbines to account for the inherent load-dependent deformations and to avoid potential material failures and hydroelastic instabilities (resonance, parametric excitations, divergence, flutter, buffeting, etc.). Here, we provide a summary of recent progress in the modeling, design, and optimization of adaptive composite marine propulsors and turbines, followed by a discussion of current challenges and future research directions.

Biography: 

Prof. Young is a Professor at the Department of Naval Architecture and Marine Engineering and the Director of the Marine Hydrodynamics Laboratory at the University of Michigan.  Her research focuses on advancing the fundamental understanding of the dynamic response and stability of adaptive marine structures in multiphase flows.  Prof. Young served as the Society of Naval Architecture and Marine Engineering (SNAME) representative on the United States National Committee on Theoretical and Applied Mechanics (USNC/TAM) between 2009-2014, and she is an active member on the SNAME H-8 (Propulsion Hydrodynamics) Panel. She has written over two hundred journal and conference papers in the area of fluid-structure interactions related to marine and coastal structures, and has acted as a consultant to government and industry.

 

Hosted by: Prof. Simo Mäkiharju <makiharju@berkeley.edu>