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报告内容摘要：
Nanoengineered surfaces promise enhanced phase-change heat transfer, which has important applications in thermal management, building environment control, water harvesting, desalination, and industrial power generation. In this talk, I will discuss fundamental studies of droplet and bubble behavior on nanoengineered surfaces, and the effect of manipulating these fluid-structure interactions on boiling and condensation heat transfer. In pool boiling, we explained the role of surface roughness on critical heat flux enhancement with experiments and modeling. Accordingly, we demonstrated a critical heat flux of ≈250 W/cm2 with hierarchical structures with a surface roughness of ≈13. In condensation, we elucidated the importance of structure geometry on droplet morphology, growth and departure dynamics. In addition, we demonstrated ≈30% higher heat transfer coefficients compared to that on state-of-the-art dropwise condensing surfaces using functionalized copper oxide nanostructures. These studies provide key insights into the complex physical processes underlying fluid-structure interactions for heat transfer enhancement and also provide a path to achieving increased efficiency in next generation thermal systems.

报告人简介：
Evelyn N. Wang is an Associate Professor in the Mechanical Engineering Department at MIT. She received her BS from MIT in 2000 and MS and PhD from Stanford University in 2001, and 2006, respectively. From 2006-2007, she was a postdoctoral researcher at Bell Laboratories, Alcatel-Lucent. Her research interests include fundamental studies of micro/nanoscale heat and mass transport and the development of efficient thermal management, water desalination, and solar thermal energy systems. Her work has been honored with awards including the 2008 DARPA Young Faculty Award, the 2011 Air Force Office of Scientific Research Young Investigator Award, the 2012 Office of Naval Research Young Investigator Award, the 2012 ASME Bergles-Rohsenow Young Investigator Award in Heat Transfer, as well as best paper awards at 2010 ITherm and 2012 ASME Micro and Nanoscale Heat and Mass Transfer International Conference.