5 papers
Surface flow profiles for dry and wet granular materials by Particle Tracking Velocimetry; the effect of wall roughness
Sudeshna Roy, Bert J. Scheper, Harmen Polman +4
Two-dimensional Particle Tracking Velocimetry (PTV) is a promising technique to study the behaviour of granular flows. The aim is to experimentally determine the free surface width…
On the defining equations of Rees algebra of a height two perfect ideal using the theory of -modules
Sudeshna Roy
Let be a field of characteristic zero, and with be a polynomial ring in variables. Let $\m=(x_1, \ldots, x_d)$ be the homogeneous maximal…
Eakin-Sathaye type theorems for joint reductions and good filtrations of ideals
Kriti Goel, Sudeshna Roy, J. K. Verma
Analogues of Eakin-Sathaye theorem for reductions of ideals are proved for -graded good filtrations. These analogues yield bounds on joint reduction vectors for a fa…
Graded components of local cohomology modules of invariant rings
Tony J. Puthenpurakal, Sudeshna Roy
Let be a regular domain containing a field of characteristic zero, be a finite subgroup of the group of automorphisms of and be the ring of invariants of $G…
Micro-macro transition and simplified contact models for wet granular materials
Sudeshna Roy, Abhinendra Singh, Stefan Luding +1
Wet granular materials in a quasi-static steady state shear flow have been studied with discrete particle simulations. Macroscopic quantities, consistent with the conservation laws…