Experimental and molecular dynamics study of gas flow characteristics in nanopores.

Autor:	Liu, QiXin, Jiang, PeiXue, Xiang, Heng
Předmět:	GAS flow AERODYNAMICS GAS dynamics MOLECULAR dynamics DYNAMICS MOLECULAR physics NANOPORES HOLES
Zdroj:	Chinese Science Bulletin; Jun2012, Vol. 57 Issue 13, p1488-1493, 6p
Abstrakt:	Gas flow characteristics in nanopores were investigated experimentally and numerically using molecular dynamics (MD) simulations with an emphasis on the friction factor and gas viscosity. The results show that the viscosity and the friction factor in nanopores are much lower than those in macroscale channels. The actual viscosities obtained from the MD studies showed that the gas viscosity in nanopores is less than the macroscale viscosity because collisions between gas molecules are less frequent in high Knudsen number flows and there are more collisions with the wall. The MD simulations show that the velocity profile is composed of two parts, with a much steeper velocity gradient near the wall. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
Externí odkaz:	Zobrazit plný text záznamu Full text from SpringerLink