Abstarct: In this dissertation, the method of dissipation particle dynamics is used to simulate the flow around the micro-airfoil. To simulate the flow around the micro-airfoil, we will actually encounter the microscale structure. At the micro scale, the flow regime is a discontinuous regime. Simulation of computational fluid dynamics is baxsed on continuity and the computational range is confined to the fluid region. Unfortunately, computational fluid dynamics is valid only for the continuous regime, so a kind of molecular method is used in this dissertation. Molecular methods can be divided into molecular dynamics, Lettis Boltzmann, Monte Carlo and dissipative particle dynamics. The molecular dynamics simulation method has high costs in the micro index and in the Letis Boltzmann method the degrees of freedom are reduced, which makes us move away from reality, In fact, simulation must be close to reality, so we need software to be close to reality. And it can be used at a low cost in a discontinuous regime. As a result, in this dissertation, the dynamic particle dynamics simulation method was used. To modify the computational fluid dynamics, a model for the solid boundary of any complex geometry is proposed in this study. The results include the study of velocity profiles in simple channel geometry and the comparison of flow simulations in channels by dissipative particle dynamics and computational fluid dynamics. The results include the study of velocity profiles in simple channel geometry and the comparison of flow simulations in channels by dissipation particle dynamics and computational fluid dynamics. The error of comparing the velocity profile in the channel with the help of these two methods was 6%. In the following, the results are simulated to investigate the flow around the diamond airfoil. The flow begins to propagate around the fine airfoil, the pattern of flow lines being symmetrical. By applying these boundary conditions, the particles reach equilibrium. The most important feature of the boundary conditions applied in the simulation by the method of dissipative particle dynamics is the impermeability of the particles into the micro-airfoil and also the correct return of the particles from the micro-airfoil wall. The results for the geometry curve of Naca 0012 airfoil are also extended at angles 0, 3, 6, 9, 10 and the flow expansion around the airfoil can be seen, as well as the effect of angle of attack and chord on lift and drag coefficients for an airfoil. Naca 0012 has been reviewed. In addition, the data obtained from the simulation of dissipation particle dynamics with other research works have been done for the ratio of maximum lift and drag coefficients. It is compared with two simulation methods of dissipated particle dynamics and computational fluid dynamics. The comparison error of these two methods was less than 3%. We observe that the change in aerodynamic properties is related to the linear slope changes of lift and drag coefficients as the function of the angle of attack for each dimensional ratio. By comparing the two methods of dissipative particle dynamics and computational fluid dynamics, we will find that the results are very close, but computational fluid dynamics do not explicitly model wall boundaries. The advantage of the method used in this dissertation is actually simulation of physical flow also this molecular method helps to reach more accurate answers that are close to reality.