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UID:20260730T175813EDT-4439uL9VpB@132.216.98.100
DTSTAMP:20260730T215813Z
DESCRIPTION:Robert Owens\nUniversity of Montreal\nA new coupled Brownian dy
 namics-smoothed particle hydrodynamics\nmethod for the computation of conf
 ined flows of non-dilute polymer\nsolutions with full hydrodynamic interac
 tion and excluded volume\nforces is presented. The starting point for the 
 algorithm is the\nsystem of coupled Langevin equations for polymer and sol
 vent\n(CLEPS) (see Oono and Freed (1981) and Öttinger and Rabin (1989)\,\n
 for example) describing\, in the present case\, the microscopic\ndynamics 
 of a flowing polymer solution with a bead-spring\nrepresentation of the ma
 cromolecules. Of crucial importance to the\nsuccess of our numerical schem
 e is the manner in which bead forces\nare transmitted to the fluid. We ado
 pt an approach which is\nreminiscent of the method of regularized Stokesle
 ts (Cortez\n(2001)). Numerical tests of some two-dimensional channel flows
 \nreveal that use of a second-order projection scheme coupled with\nfixed 
 SPH quadrature points leads to second-order velocity\nconvergence and almo
 st second-order pressure convergence\, provided\nthat the solution is suff
 iciently smooth. In the case of\nlarge-scale dumbbell and bead-spring chai
 n calculations\, an\nappropriate scaling of the number of grid points as a
  function of\nthe number of beads N ensures\, in the absence of excluded v
 olume\nforces\, that the cost of our algorithm is O(N) flops.\n
DTSTART:20101213T210000Z
DTEND:20101213T220000Z
LOCATION:Burnside Hall\, CA\, QC\, Montreal\, H3A 0B9\, 805 rue Sherbrooke 
 Ouest
SUMMARY:A mixed Brownian dynamics - SPH method for the simulation of flows 
 of suspensions of bead-spring chains in confined geometries with hydrodyna
 mic interaction
URL:/channels/event/mixed-brownian-dynamics-sph-method
 -simulation-flows-suspensions-bead-spring-chains-confined-geometri-168426
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