Numerical Simulation of Unsteady Flow Around Forward Flight Helicopter with Coaxial Rotors |
| |
Authors: | XU Heyong YE Zhengyin |
| |
Institution: | Key Laboratory of Science and Technology on Aerodynamic Design and Research, Northwestern Polytechnical University, Xi’an 710072, China |
| |
Abstract: | Three-dimensional unsteady Euler equations are numerically solved to simulate the unsteady flows around forward flight helicopter with coaxial rotors based on unstructured dynamic overset grids. The performances of the two coaxial rotors both become worse because of the aerodynamic interaction between them, and the influence of the top rotor on the bottom rotor is greater than that of the bottom rotor on the top rotor. The downwash velocity at the bottom rotor plane is much larger than that at the top rotor... |
| |
Keywords: | coaxial rotors unstructured grid overset grids thrust coefficient interaction flow helicopters numerical simulation |
本文献已被 CNKI 万方数据 等数据库收录! |