Welcome to Jianghui Wang's Webpage

Jianghui Wang Ph.D Candidate Department of Chemical and Biological Engineering University of Wisconsin Madison, WI 53706 Phone: 608/320-3958 E-mail: jwang36@wisc.edu Webpage:   https://sites.google.com/site/kevicao/ Linkedin Profile:   http://www.linkedin.com/pub/jianghui-wang/15/959/a56

Education

• Ph.D. in Chemical engineering, University of Wisconsin, Madison, WI (expected May 2012)
  Minor in Statistics
  Advisor: Professor:  Daniel J. Klingenberg
  
• B.S. in Chemical Engineering, Tianjin University, Tianjin, China (07/2006)
  B.S in Computer Science, Tianjin University, Tianjin, China (07/2006)
  

Curriculum Vitae

• Brief CV

Research Interests

• Computational modeling
  
• Transport phenomena
  
• Suspension rheology
  
• Statistical analysis
  

Research Experience

• 08/2006-Present     Research assistant, Dept. of chemical and biological engineering, University of Wisconsin-Madison
• 09/2004-12/2005   Research assistant, The center of membrane science and technology, Tianjin University
• 12/2005-07/2006   Research assistant, The center for green energy and material, Tianin Univeristy

Teaching Experience

• 08/2010-12/2010   CBE 320: Introductory Transport Phenomena
• 08/2008-12/2008   CBE 660: Intermediate Problems in Chemical Engineering
• 01/2008-05/2008   CBE 470: Process Dynamics and Control

Publications

• "Mass transfer and mixing in concentrated biomass slurries" (with Daniel J. Klingenberg), in preparation
• "Rheology in simulations of concentrated biomass slurries" (with Daniel J. Klingenberg), in manuscript
• "Shear-induced diffusion of sphere and fiber suspensions in simple shear flow" (with Daniel J. Klingenberg), in manuscript
• "Flipping, Spinning, Scooping: the drifting of a rigid U-shaped fiber in a simple shear flow" (with Emilio J. Tozzi, Michael D. Graham, and Daniel J. Klingenberg), to be submitted to physics of fluids
• "Rheology of concentrated biomass" (with Joseph R. Samaniuk, Thatcher W. Root, Tim Scott, and Daniel J. Klingenberg), Korea-Australia rheology Journal 23, 237-245 (2011)
• "Poly(vinyl alcohol)/chitosan blend membranes for pervaporation of benzene/cyclohexane mixtures" (with Lianyu Lu, Fubing Peng, Zhongyi Jianghui), Journal of applied polymer science 101, 167-173 (2006)

Honors & Awards

• Society of Rheology (SOR) Travel Grant 2010
• HQCEC Scholarship 2005
• Novozymes Scholarship 2004
• Huachang (Group) Co., Ltd. Scholarship 2003

Research Summary

I have been working on computer simulations of particle (sphere, fiber) suspensions in Prof. Klingenberg's group in UW-Madison under chemical engineering department and the rheology research center. We study the relationships between fiber properties and interactions, suspensions microstructure, and rheological and mass transfer properties of different suspensions. We develop different models to probe the above relationships. Our research gives us fundamental understanding of different interesting phenomena happening in the suspensions and what we find are applicable to different materials (Carbon-Nanotube composites, biomass slurries, et al.) by tuning the parameters. Particular topics that we have addressed are given below:

Drifting of U-shaped fiber in simple shear flow: A rigid U-shaped fiber with small curvature immersed in a simple shear flow of incompressible Newtonian fluid is found to drift steadily in the gradient direction without external force and torque. The average drifting velocity and drifting direction depend on the fiber aspect ratio, curvature, and initial orientation. The drifting is shown to be the combined effect of the flipping, spinning, and scooping motions of the fiber.

Shear-induced diffusion in sphere and fiber suspensions: The irreversible interactions between the non-Brownian particles in the suspensions cause their diffusive motion. The diffusivity could be several magnitudes larger than that of molecular diffusion. We investigate the controlling factors for this phenomenon in order to improve the process of heat or mass transfer, mixing, et al.

Rheology of concentrated biomass slurries: Processing biomass slurries at high concentration has the benefit of reducing capital cost but also brings challenges in unit operations. We study different rheological properties of the slurries (apparent viscosity, yield stress, normal stress differences) to improve the processing steps. We are also investigating the relationship between rheology and shear-induced diffusion since they are all directly related to the microstructure of the suspensions.