Abstract
The particle orientation of rod-like particle system is one of the most fundamental and urgent problems to be elucidated. This paper discusses the characteristics of the particle orientation of a two dimensional rod-like particle, as identified by computer simulation. As a result of it, the following conclusions are obtained.
1) The degree of particle orientation increases with the decrease in the porosity of the particle system but is constant over a specified porosity.
2) The degree of particle orientation changes more or less, periodically, in a direction perpendicular to the wall.
3) An estimation equation for the particle orientation can be obtained and its validity is checked.
