Energy nonequipartition in systems of inelastic, rough spheres
Energy nonequipartition in systems of inelastic, rough spheres
复制标题
非弹性粗糙球体系统中的能量非均分
DOI：
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发表时间：
1998
期刊：
影响因子：
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通讯作者：
S. Luding
中科院分区：
文献类型：
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作者：
S. McNamara;S. Luding
我们计算和验证与模拟之间的比率的平均平移和旋转能量的系统与粗糙，非弹性粒子，无论是强制或自由冷却。这个比率表明能量的不均分。在定常流动中，该比值主要取决于颗粒粗糙度，但在非定常流动中，如自由冷却的颗粒介质，它也强烈地依赖于法向耗散。这里提出的方法统一和简化了由更精细的动力学理论得到的不同结果。我们观察到边界诱导能流起着重要的作用。
We calculate and verify with simulations the ratio between the average translational and rotational energies of systems with rough, inelastic particles, either forced or freely cooling. The ratio shows a nonequipartition of energy. In stationary flows, this ratio depends mainly on the particle roughness, but in nonstationary flows, such as freely cooling granular media, it also depends strongly on the normal dissipation. The approach presented here unifies and simplifies different results obtained by more elaborate kinetic theories. We observe that the boundary induced energy flux plays an important role.