Calculation of confined fluid mean density with interaction of Yukawa

To study the fluid structure, using computer simulation method, it is necessary to calculate the mean density of fluid for the evaluation to number of particles in each cell. In this paper we used Kim approximation method, which contain two approximation methods, namely, weighted density approximation of Tarazona and MHNC approximation that proposed by Rickyzen and Augusti in theory of density functional. Using this approximation meandensity of Yukawa fluid confined between two parallel plane walls for two conditions were calculated: one interaction with hard-wall and the other attractive Yukawa-wall at different temperatures.