Orientational Correlation and Velocity Distributions in Uniform Shear Flow of a Dilute Granular Gas

by: Bishakdatta Gayen, Meheboob Alam

Physical Review Letters, Vol. 100, No. 6. (2008)

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Abstract

Using particle simulations of the uniform shear flow of a rough dilute granular gas, we show that the translational and rotational velocities are strongly correlated in direction, but there is no orientational correlation-induced singularity at perfectly smooth (=-1) and rough (=1) limits for elastic collisions (e=1); both the translational and rotational velocity distribution functions remain close to a Gaussian for these two limiting cases. Away from these two limits, the orientational as well as spatial velocity correlations are responsible for the emergence of non-Gaussian high-velocity tails. The tails of both distribution functions follow stretched exponentials, with the exponents depending on normal (e) and tangential () restitution coefficients.

@article{citeulike:2547984, abstract = {Using particle simulations of the uniform shear flow of a rough dilute granular gas, we show that the translational and rotational velocities are strongly correlated in direction, but there is no orientational correlation-induced singularity at perfectly smooth (=-1) and rough (=1) limits for elastic collisions (e=1); both the translational and rotational velocity distribution functions remain close to a Gaussian for these two limiting cases. Away from these two limits, the orientational as well as spatial velocity correlations are responsible for the emergence of non-Gaussian high-velocity tails. The tails of both distribution functions follow stretched exponentials, with the exponents depending on normal (e) and tangential () restitution coefficients.}, author = {Gayen, Bishakdatta and Alam, Meheboob }, citeulike-article-id = {2547984}, doi = {10.1103/PhysRevLett.100.068002}, journal = {Physical Review Letters}, keywords = {2008, grain, shear}, number = {6}, posted-at = {2008-03-18 00:56:11}, priority = {2}, publisher = {APS}, title = {Orientational Correlation and Velocity Distributions in Uniform Shear Flow of a Dilute Granular Gas}, url = {http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal\&id=PRLTAO000100000006068002000001\&idtype=cvips\&gifs=yes}, volume = {100}, year = {2008} }

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TY - JOUR ID - citeulike:2547984 L3 - citeulike-article-id:2547984 TI - Orientational Correlation and Velocity Distributions in Uniform Shear Flow of a Dilute Granular Gas JF - Physical Review Letters VL - 100 IS - 6 PB - APS N2 - Using particle simulations of the uniform shear flow of a rough dilute granular gas, we show that the translational and rotational velocities are strongly correlated in direction, but there is no orientational correlation-induced singularity at perfectly smooth (=-1) and rough (=1) limits for elastic collisions (e=1); both the translational and rotational velocity distribution functions remain close to a Gaussian for these two limiting cases. Away from these two limits, the orientational as well as spatial velocity correlations are responsible for the emergence of non-Gaussian high-velocity tails. The tails of both distribution functions follow stretched exponentials, with the exponents depending on normal (e) and tangential () restitution coefficients. KW - 2008 KW - grain KW - shear AU - Gayen, Bishakdatta AU - Alam, Meheboob PY - 2008/// UR - http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PRLTAO000100000006068002000001&idtype=cvips&gifs=yes ER -

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