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Dynamic simulation of freely draining flexible polymers in steady linear flows. (English) Zbl 0893.76007
We present a study of the rheological and optical behaviour of Kramers bead-rod chains in dilute solution using stochastic computer simulations. We consider two model linear flows, steady shear and uniaxial extensional flow, in which we calculate the non-Newtonian Brownian and viscous stress contribution of the polymers, their birefringence and a stress-optic coefficient. We have developed a computer algorithm to differentiate the Brownian from the viscous stress contribution which also avoids the order \((\delta t)^{-1/2}\) noise associated with the Brownian forces.

MSC:
76A99 Foundations, constitutive equations, rheology, hydrodynamical models of non-fluid phenomena
82D60 Statistical mechanical studies of polymers
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