A hard disc analysis of momentum deficit due to dissipation

A hard disc analysis of momentum deficit due to dissipation
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由于耗散导致的动量不足的硬盘分析

DOI:
10.1088/0031-8949/86/05/058508
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发表时间:
2012
期刊:
影响因子:
2.9
通讯作者:
K. Sekimoto
K. Sekimoto
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
R. Kawai;A. Fruleux;K. Sekimoto

文献摘要

被引文献

相似文献

当一个布朗物体处于非平衡稳定状态时,作用在它身上的实际力不同于热平衡状态下的力。在我们之前的论文(Fruleux et al 2012;Rev. Lett. 108 160601),我们发现了一个通过耗散动量不足(MDD)概念将缺失力与耗散率联系起来的一般原理。在本文中,我们使用基于硬盘气体和布朗活塞的各种模型来检验这一原理。通过解析得到了力的显式表达式,并与分子动力学模拟结果进行了比较。良好的一致性证明了MDD的有效性。
When a Brownian object is in a non-equilibrium steady state, the actual force exerted on it is different from the one in thermal equilibrium. In our previous paper (Fruleux et al 2012 Phys. Rev. Lett. 108 160601), we discovered a general principle that relates the missing force to dissipation rates through the concept of momentum deficiency due to dissipation (MDD). In this paper, we examine the principle using various models based on hard disc gases and Brownian pistons. Explicit expressions of the forces are obtained analytically and the results are compared with molecular dynamics simulations. The good agreement demonstrates the validity of MDD.