Volume 36, Number 6, December 2018
|Page(s)||1045 - 1051|
|Published online||12 March 2019|
Research on Numerical Calculation for Aerodynamic Characteristics Analysis of Ducted Fan
School of Aeronautics, Northwestern Polytechnical University, Xi’an 710072, China
2 School of Astronautics and Aeronautics, Tsinghua University, Beijing 100084, China
3 Chinese Aeronautical Ratio and Electronics Research Institute, Shanghai 200233, China
By taking a typical ducted fan system model as the research object, the unsteady aerodynamics calculation method is established based on slide dynamic mesh technology. After the experimental validation of calculation method, the influence factors of viscous effect, tip clearance and propeller disk location are analyzed based on numerical calculation. The research results show that, the viscous effect embodies the boundary layer interactions between propeller tip and duct, and the calculation accuracy can be improved by considering viscous effect; the tip clearance determines the influence effect of propeller, and the decreasing of tip clearance leads to the increasing of duct thrust; the propeller disk location determines the flow quality and tip clearance, a reasonable location must bring the optimal fairing effect and ensures the tip clearance meeting the design requirements.
Key words: ducted fan / viscous effect / tip clearance / propeller disk location / dynamic mesh / unsteady aerodynamics
关键字 : 涵道风扇 / 黏性效应 / 桨-涵道间隙 / 桨盘位置 / 滑移网格 / 非定常气动力
© 2018 Journal of Northwestern Polytechnical University. All rights reserved.
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