Ns. Martys et Rd. Mountain, Velocity Verlet algorithm for dissipative-particle-dynamics-based models of suspensions, PHYS REV E, 59(3), 1999, pp. 3733-3736
A velocity Verlet algorithm for velocity dependent forces is described for
modeling a suspension of rigid body inclusions. The rigid body motion is de
termined from the quaternion-based scheme of Omelyan [Comput. Phys. 12, 97
(1998)]. An iterative method to determine angular velocity in a self-consis
tent fashion for this quaternion-based algorithm is presented. This method
is tested for the case of liquid water. We also describe a method for evalu
ating the stress tensor for a system of rigid bodies that is consistent wit
h the velocity Verlet alogorithm. Results are compared to the constraint-ba
sed rattle algorithm of Anderson [J. Comput. Phys. 52, 24 (1993)]. [S1063-6
51X(99) 13203-3].