Diffusion coefficient of Brownian particle in rough micro-channel.
This study examines the feasibility of using of the lattice Boltzmann method to determine how the surface roughness of a quadrate channel affects the diffusion coefficient of Brownian particle(s). The surface was represented by a regular array of spheres. Surface roughness reduced the diffusion coefficient of the Brownian particle(s) because of a change in the velocity autocorrelation function decay and in pressure. Additionally, the neighboring particles increased the diffusion coefficient of Brownian particle.
Jun
Chen
C
Thermal Engineering Department, Tsinghua University, Beijing 100084, China.
Peng
X F
XF
Lee
D J
DJ