Nontrivial velocity distributions in inelastic gases

Nontrivial velocity distributions in inelastic gases
复制标题

非弹性气体中的非平凡速度分布

DOI:
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发表时间:
2001
期刊:
影响因子:
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通讯作者:
E. Ben
E. Ben
中科院分区:
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文献类型:
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作者:
P. Krapivsky;E. Ben

文献摘要

被引文献

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利用玻尔兹曼方程研究了空间均匀非弹性气体。考虑均匀碰撞率,得到了对任意空间维数d和任意耗散系数有效的解析结果。在非强制情况下,我们发现对于足够大的速度,速度分布呈P(v,t)~v-σ代数衰减。指数σ(d,)对空间维数和耗散系数具有非平凡的依赖性。
We study spatially homogeneous inelastic gases using the Boltzmann equation. We consider uniform collision rates and obtain analytical results valid for arbitrary spatial dimension d and arbitrary dissipation coefficient . In the unforced case, we find that the velocity distribution decays algebraically, P(v,t)~v-σ, for sufficiently large velocities. The exponent σ(d,) exhibits nontrivial dependence on the spatial dimension and the dissipation coefficient.