应热动力工程系李军教授邀请，美国宾夕法尼亚州维拉诺瓦大学（Villanova University）机械工程系吴千红（Qianhong WU）副教授来访我校，并做学术讲座
We Treat the China Smog?
Learned from the Exquisite Design of Microcirculation for Super Lubrication
Biological scientists have wondered,
since the motion of red cells was first observed in capillaries, how a red
cell, with an 8µm diameter, can move with so little friction in tightly fitting
microvessels, only 5-6 µm in diameter, and survive 105 passages
through microcirculation during a typical lifetime of 120 days without being
damaged or undergoing hemolysis. Recent studies (Feng and Weinbaum, JFM, 2000;
Weinbaum et al., PNAS, 2003; Wu et al., PRL, 2004) attributed this frictionless
motion to the dramatically enhanced hydrodynamic lifting force generated inside
the endothelial glycocalyx layer (EGL), a soft porous layer that covers the
inner surfaces of our capillaries, as a red blood cell glides over it. Lift
generation inside highly compressible porous media is a new concept for porous
media flow. In this talk, a systematic study of this concept is presented. Its
diverse applications, from red cells moving in a tightly fitting capillary, to
human skiing or snowboarding, to a next generation high speed train that glides
on a soft porous track made of goose down pillow will be discussed as examples.
These applications are chosen for their novelty, but the basic concepts could
have important application in the design of soft porous bearings with greatly
increased lubrication pressures and long life.
Dr. Qianhong Wu is a tenured Associate Professor of Mechanical Engineering
at Villanova University. He is the founding director of Villanova Cellular
Biomechanics and Sports Science Laboratory (CBMSS). Dr. Wu received his Ph.D.
in Mechanical and Biomedical Engineering in 2005, from The City College of The
City University of New York & New York Center for Biomedical Engineering
(NYCBE), working with CUNY distinguished Professor, Dr. Sheldon Weinbaum. Before joining NYCBE in
1999, Dr. Wu had a B.S. in mechanical
engineering from Huazhong University of Science and Technology (HUST), and a
M.S. in electrical engineering from the Institute of Electrical Engineering,
The Chinese Academy of Sciences. In August 2005, Dr. Wu started his faculty
career as an Assistant Professor at Villanova University. He was promoted to an
Associate Professor with tenure in May 2011.
Dr. Wu applies fundamental principles of fluid dynamics
to the bio and bio-inspired applications. His
research interests include porous medial flow, fluid dynamic and transport aspects of biological systems,
cardiovascular engineering, brain biomechanics, cellular mechanisms for
mechanotransduction, bone fluid flow, hemodynamics, sports biomechanics, and
soft/super lubrication. He has published extensively on these topics.
Especially, Dr. Wu’s group is widely recognized for developing a novel experimental
and theoretical approach to study the lift generation inside soft porous media.
This approach was successfully applied to such diverse problems as the
frictionless motion of a red cell in a tightly fitting capillary, the lift
forces generated during skiing or snowboarding, the design of a futuristic
train track, in addition to classical lubrication theory applications. This
research was reported extensively in Science®, Nature®, Scientific American®,
PhysicsWeb®, Discover Channel ® and hundreds of public media world widely.
These research projects are supported by the National Science Foundation of US
(NSF), the National Institute of Health (NIH) and the Office of Naval Research
· Member of
American Society of Mechanical Engineers (ASME), Biomedical Engineering Society
(BMES), American Physical Society (APS), American Society of Engineering
Education (ASEE), International Sports Engineering Association (ISEA);
for multiple peer-reviewed journals, including Journal of Porous Media, Journal of Sports Engineering, Journal of
Biomechanics, Chemical Engineering Sciences, Journal of Sports Science,
European Biophysics Journal, Microvascular Research etc.
invited to give talks in multiple institutions around the world for the
pioneering work in soft porous media transport. These institutions include the
Chinese Academy of Sciences, Northwestern Polytechnical University of China,
Northwest University of China, Lanzhou University, Zhejiang University, Peking
University, Beijing Normal University and University of Delaware, etc.
symposiums for 8th International Conference on Porous Media & Annual
Meeting; chairing technical sessions in professional conferences.
advisor to Pi Tau Sigma Honor Society and Bioengineering Minor. Serving on the
Laboratory Committee, Graduate Committee, Curriculum Committee and Faculty
Search Committee of the Mechanical Department; Serving on the College of
Engineering Committee to develop an Interdisciplinary Bioengineering Laboratory
for Teaching and Research; Serving on the University Committee to develop a
Bioengineering minor at Villanova University, The Villanova Institute for
Teaching and Learning (VITAL) Engineering Advisory Committee; and the Faculty
Congress Elections and Credentials Committee; chairing the thermal-fluids
cluster of Mechanical Engineering Department of Villanova University.
CCNY Teaching Workshop for Engineering Faculty-2004(sponsored by NSF); Attended
Air Force Research Lab Thermal Management workshop, Dayton, Ohio, October
27-28, 2009; Attended the AAC&U (Association of American Colleges and
Universities) "Faculty Roles in High-Impact Practices" Conference,
Philadelphia, Pennsylvania, March 25-27, 2010; Attended 2010 NIH Regional
Seminar on Program Funding and Grants Administration, Philadelphia,
Pennsylvania, April 14-16, 2010. Attended 2013 NSF Proposal Writing workshop,
Philadelphia, Pennsylvania, October 2nd, 2013.
Villanova University: Villanova is a private research
university and offers BS, MS and PhD degrees. The Mechanical Engineering Department has 22
full-time faculty members, approximately 350 undergraduate students, and 150
graduate students, The ME faculty are internationally recognized for their
research achievements. Villanova university is located 12 miles from
Philadelphia along the historic Main Line. From its founding in 1842 to its
position today as a nationally recognized leading university, Villanova
is ranked by U.S. News
& World Report as the 50th best National
University in the U.S. for 2017.