Document Type : Research Article


1 M.Sc. Student. Department of Mechanical and Aerospace, Engineering, Shahrood University of Technology,, Shahrood, Iran.

2 Assistant Professor. Department of Mechanical and Aerospace, Engineering, Shahrood University of Technology, Shahrood, Iran.

3 Professor. Department of Mechanical and Aerospace, Engineering, Shahrood University of Technology, Shahrood, Iran.

4 Associate Professor. Department of Mechanical and Aerospace, Engineering, Shahrood University of Technology. Shahrood, Iran


This paper uses the dissipative particle dynamic method to simulate the flow around a micro-airfoil. Due to the common problem in applying boundary conditions and the lack of aerodynamic study of objects in this molecular method, we decided to study this field. In this study, periodic boundary conditions were used, and the particles were balanced by applying these boundary conditions. The results include the analysis of velocity profiles in simple channel geometry and the comparison of flow simulations in channels by dissipative particle dynamics and computational fluid dynamics. The error of comparing the velocity profiles with these two methods was 6%. Next, the flow around the rhombus-shaped airfoil was simulated, and with the expansion of the flow around the airfoil, the pattern of flow lines was obtained symmetrically. The results for airfoil NACA0012 were also extended to angles 0, 3, 6, 9 and 10. The diagram of aerodynamic coefficients and the diagram of aerodynamic force ratio in terms of attack angle have been compared with two simulation methods of dissipative particle dynamics and computational fluid dynamics. The comparison error of these two methods was calculated to be less than 3%. 


Main Subjects

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