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Santacreu SD, Galliero G, Odunlami M, et al. Low density shear viscosity of Lennard-Jones chains of variable rigidities. J Chem Phys. 2012;137(20):204306doi: 10.1063/1.4767528.
Santacreu, S. D., Galliero, G., Odunlami, M., & Boned, C. (2012). Low density shear viscosity of Lennard-Jones chains of variable rigidities. The Journal of chemical physics, 137(20), 204306. https://doi.org/10.1063/1.4767528
Santacreu, S Delage, et al. "Low density shear viscosity of Lennard-Jones chains of variable rigidities." The Journal of chemical physics vol. 137,20 (2012): 204306. doi: https://doi.org/10.1063/1.4767528
Santacreu SD, Galliero G, Odunlami M, Boned C. Low density shear viscosity of Lennard-Jones chains of variable rigidities. J Chem Phys. 2012 Nov 28;137(20):204306. doi: 10.1063/1.4767528. PMID: 23206002.
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J Chem Phys. 2012 Nov 28;137(20):204306. doi: 10.1063/1.4767528.

Low density shear viscosity of Lennard-Jones chains of variable rigidities.

The Journal of chemical physics

S Delage Santacreu, G Galliero, M Odunlami, C Boned

Affiliations

  1. Pôle Calcul Scientifique et Traitement des données, Université de Pau et des Pays de l'Adour, rue Jules Ferry, 64000 PAU, France.

PMID: 23206002 DOI: 10.1063/1.4767528

Abstract

The zero-density shear viscosity of different types of short Lennard-Jones chains, up to the hexa-decamer, has been evaluated using a non-equilibrium molecular dynamics scheme. Simulations have been performed on chains of variable rigidities going from the fully flexible to the fully rigid chains. Very interestingly, it is found that there exists a universal relation (a power law) between the zero-density viscosity of the Lennard-Jones chains and their radius of gyration whatever the rigidity of the chain and for all tested temperatures (ranging from 2.5 to 6 in reduced units). Furthermore, for the studied range of temperature, it is shown that the zero-density viscosity of both fully flexible chains and fully rigid chains models can be obtained with an accuracy of a few percents knowing only the dimer viscosity and the length of the chain.

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