粒子质量及其定态流的反转  

The Mass of Particles and the Reversion of the Steady Current

作　　者：于慧[1] 王永宏[1] 赵同军[1] 吴魏霞 

机构地区：[1]河北工业大学文理学院,天津300130

出　　处：《河北工业大学学报》2001年第5期12-17,共6页Journal of Hebei University of Technology

基　　金：国家自然科学基金资助项目(19975073);河北省科技厅科研与发展基金资助项目(00547001D-19)

摘　　要：将高斯色噪声作为系统的非平衡涨落，建立布朗粒子含惯性、阻尼及双源噪声的动力学模型，着重讨论了粒子质量对输运过程的影响．应用 Ｌａｎｇｅｖｉｎ Ｍｏｎｔｅ Ｃａｒｌｏ方法，得出布朗粒子稳态流的反转与粒子质量有关，且不随粒子质量的改变而单调变化．The colored noise is considered as a non-equilibrium fluctuation of system, the Brownine particle's Langevin diffusion equation including damping force,inertia ratchet potential and two noise sources is proposed. The influence of particle mass to particle's transport process is studied. It is found that the steady current re- version of particle appears with the increasing of particle mass, and the change of steady current is not monotone with monotone increasing of particle mass by using Langevin Monte Carlo's method.

关 键 词：色噪声 非平衡涨落 粒子质量 稳态流 粒子输送 布朗粒子 动力学模型 

分 类 号：O552[理学—热学与物质分子运动论] O422.8[理学—物理]