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Orientational ordering in sheared inelastic dumbbells

Talbot, J (Paris VI)
Friday 09 January 2009, 10:05-10:30

Seminar Room 1, Newton Institute


Using event driven simulations, we show that homogeneously sheared inelastic dumbbells in 2D are randomly orientated at low packing fraction, but show an increasingly preferred alignment with the shear direction as the packing fraction increases. The orientational order parameter exhibits a continuous increase with packing fraction and does not appear to exhibit a universal scaling with elongation. Except at the highest packing fractions, the orientational distribution function can be reconstructed with a few coefficients of the Fourier expansion. We also present results for the translational and rotational granular temperatures and the stress tensor.


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