• Prof.  Jianying Zhang
  • Prof. Jianying Zhang
  • Western Washington University, USA
  • Title: Some Numerical and Analytical Approaches to Viscoplastic Fluids
  • Abstract:

    Viscoplastic fluids are a family of non-Newtonian fluids with yield stresses. A viscoplastic fluid behaves as an elastic solid if the applied shear stress is under some yield value, otherwise it flows as a non-Newtonian viscous fluid. The mechanics, as well as mass and heat transport of viscoplastic materials are becoming increasingly important with the discovery that many industrial fluids are viscoplastic. The main challenges in understanding a viscoplastic fluid are the nonlinear properties caused by its non-Newtonian features and the multi-phase flow structures due to the existence of the yield surfaces. How does the yield stress affect the fluid stability? How can the yield surfaces be detected accurately? These are interesting research topics. I will outline the progress that has been made in answering them via some recent works.

  • Biography:

    Jianying Zhang received her B.Sc. and M.Sc. degrees in applied mathematics at Tsinghua University, Beijing, China in 1995 and 1998, respectively. She completed her Ph.D. in applied mathematics at University of California, Santa Barbara, U.S.A. in 2002. During September – December 2002, she served as a core participant of IPAM long-term program “Mathematics in Nanoscale Sciences and Engineering” at Institute for Pure and Applied Mathematics (IPAM), University of California, Los Angeles, U.S.A. Then she worked as a postdoctoral researcher for half a year in the department of mechanical and environmental engineering at University of California, Santa Barbara, U.S.A., under the guidance of Dr. John Bruch. Her major research contributions were in shape optimizations of plate piezoelectric control and level set methods for numerical simulations. Right after, she held a PIMS/MITACS postdoctoral fellowship, at Pacific Institute for Mathematical Sciences (PIMS), University of British Columbia, Canada, under the guidance of Dr. Ian Frigaard and Dr Brian Wetton. Her major field of study at UBC was in computational fluid mechanics, specified in non-Newtonian fluid flows. She joined the department of mathematics at Western Washington University, Bellingham, Washington, U.S.A. in 2006 and is now an associate professor. Her current research interests include numerical partial differential equations, simulation of complex fluid flows and mathematical biology. She has significant publications in Journal of Fluid Mechanics, Computer Methods in Applied Mechanics and Engineering, International Journal for Numerical Methods in Fluids, Numerical Methods for PDEs, Nonlinearity, as well as the Bulletin of Mathematical Biology. Meanwhile, she has served as international conference speaker, organizing committee member and journal paper reviewer in the relevant research fields.

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Important Dates
Conference:
November 28-30, 2014
Paper or Abstract Submission Due:
August 12, 2014  >> October 17, 2014
Early Bird Registration due for Accepted Paper or Abstract: 10 days after acceptance notification
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