Next: Distinct Element Method
Parallel Distinct Element Method
Senro Kuraoka and
The interaction of solid surfaces and granular particles has
been studied for over 200 years and yet the fundamental behavior
of such interfaces remains undefined. Development of a
computational theory and a constitutive law capturing the
physics of the interface behavior is the key to advance our understanding. Sophisticated tests have proven the inadequacy of simplistic methods
in their representation of the interaction between soil and structural
surfaces. We develop a computational theory based on experimentation
and the use of
distinct element method (DEM) simulations.
DEM simulations become computationaly very expensive for particles of
more than several thousands. The industrial applications of DEM are
many, including lost foam technology in metal casting. A parallel
DEM algorithm has been developed for the Intel supercomputers to
enhance the number and the complexity of particles and surfaces to
be modeled. Preliminary results for 2400 particles are obtained
and the parallel efficiency is about 50 % on sixteen nodes.
Further study is
underway to increase the performance.
Wed Jan 22 11:10:46 EST 1997