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Orientational ordering in sheared inelastic dumbbells

Friday 9th January 2009 - 10:05 to 10:30
INI Seminar Room 1
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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University of Cambridge Research Councils UK
    Clay Mathematics Institute London Mathematical Society NM Rothschild and Sons