Professor WaiChing (Steve) Sun Wins the 2013 Caterpillar Best Paper Prize

Apr 12 2014

The publisher Springer has announced that the following paper with Prof. Waiching Sun as the lead author has been selected by the editorial boards of Acta Geotechnica as the best paper in the year of 2013:

Professor WaiChing (Steve) Sun
WaiChing (Steve) Sun

W.C. Sun, M.R. Kuhn and J.W. Rudnicki, A multiscale DEM-LBM analysis on permeability evolutions inside a dilatant shear band, Acta Geotechnica, 8(5):465-480, doi:10.1007/s11440-013-0210-2, 2013.

The authors will receive the Caterpillar Best Paper Prize with a $1000 cash donated by Caterpillar.

The award-winning paper describes a new mutliscale analysis technique that combines discrete element method and lattice Boltzmann/finite element hybrid scheme to analyze why and how permeability changes during the formation of dilatant shear bands in granular materials. This work provides a detailed picture on how microstructures evolving due to granular motions, such as sliding and rotation of particles, and how these motions collectively affect the macroscopic flow properties. Because macroscopic flow and failure are often controlled by localized structures, such as shear bands, this line of work is essential for understanding hydro-mechanical behaviors of the shallow crusts and reservoirs at relevant size scales, which are orders of magnitude larger than the pore scale.

Prof. Sun is the newest member, joining the Department in January 2014. He obtained his PhD from Northwestern University and was a senior member of technical staff in the mechanics of materials department at Sandia National Laboratories (Livermore, CA) prior to joining Columbia University.