Simulation of Sheared Suspensions With a Parallel Implementation of QDPD.
Simulation of Sheared Suspensions With a Parallel
Implementation of QDPD.
Sims, J. S.; Martys, N. S.
Journal of Research of the National Institute of
Standards and Technology, Vol. 109, No. 2, 267-277,
dissipative particle dynamics; domain decomposition;
mesoscopic modeling; parallel algorithms; rheology;
spatial decomposition; suspensions
A parallel quaternion-based dissipative particle
dynamics (QDPD) program has been developed in Fortran to
study the flow properties of complex fluids subject to
shear. The parallelization allows for simulations of
greater size and complexity and is accomplished with a
parallel linkcell spatial (domain) decomposition using
MPI. The technique has novel features arising from the
DPD formalism, the use of rigid body inclusions spread
across processors, and a sheared boundary condition. A
detailed discussion of our implementation is presented,
along with results on two distributed memory
architectures. A parallel speedup of 24.19 was obtained
for a benchmark calculation on 27 processors of a
distributed memory cluster.