论文标题

碰撞碰撞粒状粒状流的电荷传输方程,具有无序的波动动能

Charge Transport Equation for Bidisperse Collisional Granular Flows with Nonequipartitioned Fluctuating Kinetic Energy

论文作者

Ceresiat, Lise, Kolehmainen, Jari, Ozel, Ali

论文摘要

从Boltzmann-Enskog动力学方程式开始,带有接触电气化的bidispasse颗粒流的电荷传输方程是用单独的平均速度,总动力学,电荷,电荷和每个固相的电荷方差得出的。为了关闭局部平均的传输方程,假定麦克斯韦分布既有粒子速度和电荷。首先重新审视Bidispasse固体混合物的流体动力方程,并由质量,动量,总动能的传输方程组成,这是颗粒温度的总和和波动动力学张量的痕迹,然后进行了电荷。阶段之间的电荷转移和一个阶段的电荷堆积是用局部电荷建模的,并且相位和局部电场之间的有效工作函数差异。通过硬球模拟对三维均匀的,准辅助的空间上无均匀的bidispers粒状粒状气体和三维除外生物的分离biDispers bidispers bidispers bidispers biDispers biDispers granular callulars callulars call s in Condoctucted墙壁,则评估了重新审查带有本构关系的衍生的流体动力方程和带有本构关系的派生的电荷传输方程。

Starting from the Boltzmann-Enskog kinetic equations, the charge transport equation for bidisperse granular flows with contact electrification is derived with separate mean velocities, total kinetic energies, charges and charge variances for each solid phase. To close locally-averaged transport equations, a Maxwellian distribution is presumed for both particle velocity and charge. The hydrodynamic equations for bidisperse solid mixtures are first revisited and the resulting model consisting of the transport equations of mass, momentum, total kinetic energy, which is the sum of the granular temperature and the trace of fluctuating kinetic tensor, and charge is then presented. The charge transfer between phases and the charge build-up within a phase are modelled with local charge and effective work function differences between phases and the local electric field. The revisited hydrodynamic equations and the derived charge transport equation with constitutive relations are assessed through hard-sphere simulations of three-dimensional spatially homogeneous, quasi-onedimensional spatially inhomogeneous bidisperse granular gases and a three-dimensional segregating bidisperse granular flow with conducting walls.

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