Application of CFD Technology in Rotor Aerodynamic Simulation

Computational fluid dynamics (CFD) is an important method to accurately calculate rotor flow field and aerodynamic performance of helicopter. With the rapid development of simulation theory and computing power, the advantages of CFD technology such as low cost, high efficiency, short cycle and high accuracy are increasingly prominent. Rotor is one of the most important components of helicopter. It provides lift, propulsion and control for helicopter. Its aerodynamic performance has an important impact on the performance of helicopter. The threshold of CFD simulation technology for helicopter rotor is relatively high, which requires experienced and professional engineers to complete, which hinders the popularization of this technology and its large-scale application in the engineering design stage. Therefore, this paper attempts to make an overall introduction to the application of CFD technology in helicopter rotor aerodynamic simulation. In this paper, the main control equation, grid technique, turbulence model, space discrete method, time discrete method, initial condition and boundary condition, momentum source method and efficient calculation method involved in helicopter rotor aerodynamic simulation are summarized, and the advantages and disadvantages of each method are pointed out. This paper introduces the latest achievements of CFD technology in helicopter aerodynamic simulation, summarizes the research on helicopter rotor aerodynamic simulation, and puts forward the prospect of its development.