Hayley H. Shen
Professor
132 Rowley Lab
Clarkson University
PO Box 5755
Potsdam, NY 13699-5710
Phone: 315-268-6614
Fax: 315-268-7985
E-mail: hhshen@clarkson.edu
Research site
CV: PDF
Education
B.Sc., National Taiwan University (1972)
M.S., University of Iowa (1974)
Ph.D., University of Iowa (1976) Clarkson University (1982)
Teaching
Dr. Shen is a faculty advisor for the Tau Beta Pi and Chi-Epsilon. She is also the associate director of Clarkson's Honors Program.
Courses taught include:
Graduate
Coastal Engineering, Advanced Fluid Mechanics, Groundwater and Seepage, Sediment Transport, River and Estuarine Hydraulics, Hydrodynamic Dispersion, Continuum Mechanics, Nonlinear Mechanics, Discrete Element Method
Undergraduate
Statics, Dynamics, Engineering for Non-Engineers, Introduction to Fluid Mechanics, Introduction to Engineering Use of Computers, Calculus II, Elementary Differential Equation, Fourier Series and Boundary Value Problems, Chaos and Coherency (Honors Science Course), Climate Change Impacts on Cold Regions (Honors Science Course)
Research Interests
Dr. Shen's research areas are in mechanics of discrete system, applications to sea ice dynamics and particulate materials in general. Below are several current project areas.
Pancake Ice Formation
Pancake ice is the first form of sea ice cover in most part of the polar and sub-polar oceans. Their formation is associated with waves. The size and thickness, the internal structure of the pancake ice affect heat and momentum transfer between air and ocean, and the marine biology that lives off the sea ice. This study utilizes field observations in the Arctic and Antarctic, as well as laboratories in the US and Germany. The picture shows two researchers picking up pancake ice samples from the Southern Ocean.
Transitional Granular Flows
Granular materials can behave like a solid as in a sand pile, a liquid as in a landslide, or a gas as in a dust storm. Many industrial applications require processing granular materials that can only be design by trial-and-error. This is because unlike a regular fluid, granular materials can "solidify, melt, and evaporate" abruptly. Many industries suffer equipment failure due to the lack of understanding of how granular materials transition from one regime to the other. Future human explorations to the moon and Mars require in-situ resource utilization that challenges a greater understanding and thus control and processing of granular materials. The picture shows flow of electro-statically charged particles flowing in a pipe system.
Thin Film Processing
Computational method used in studying granular materials can be applied readily to nano-materials. An example is the production of thin polymer films using the spin-coating technique. Although established for a long time, spin-coating of different polymers has been an art rather than science. The final product is sensitively dependent on tiny changes of the molecular structures of the polymers, the spinning speed, the pH value of the solution etc. Computational method can be used to efficiently design the processing parameters for different chemical components.
Selected Publications
H.H. Shen and B. Sankaran "Internal length and time scales in a simple shear granular flow," Phys. Rev. E. 70 (5): Art. No. 051308 Part 1, Nov 2004, (2004).
H.H. Shen, S.F. Ackley and Y. Yuan, "Limiting diameter of pancake ice," J. Geophys. Res. 109, C12035, doi:10. 1029/2003JC002123. (2004).
M. Dai, Hayley H. Shen, Mark A. Hopkins, and Stephen F. Ackley, "Wave rafting and the equilibrium pancake ice cover thickness," J. Geophys. Res., 109, C07023, doi:10.1029/2003JC002192. (2004).
A.H.-D. Cheng, C.C.K. Liu, H.H. Shen, M. Teng and K.-H. Wang, "Fluid Mechanics — An Essential Part of an Environmental Engineering Curriculum," J. Prof. Issues Eng. Edu. Practice, 128(4):121-125, (2002).
H.H. Shen, "Sample Size Effects on Constitutive Relations of Granular Materials," J. Eng. Mech., 127(10):978-986, (2001).
H.H. Shen, and Y. Zhong. "Theoretical Study of drift of small rigid floating objects in wave fields," ASCE/J. Waterway, Port, Coastal, and Ocean Engineering, 127(6):343-351, (2001).