| Numerical investigation on unsteady characteristics of ducted fans in ground effect |
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| 作者姓名： | Yiwei LUO Tianfu AI Yuhang HE Bin XU Yuping QIAN Yangjun ZHANG |
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| 作者单位： | 1. State Key Laboratory of Automotive Safety and Energy, School of Vehicle and Mobility, Tsinghua University;2. Vehicle Research Center, School of Mechanical Engineering, Beijing Institute of Technology;3. Beijing Institute of Technology Chongqing Innovation Center |
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| 基金项目： | co-supported by the National Key Research and Development Program of China (No. 2020YFC1512500)； |
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| 摘 要： | Ducted fans are widely used in various applications of Unmanned Aerial Vehicles(UAVs) due to the high efficiency, low noise and high safety. The unsteady characteristics of ducted fans flying near the ground are significant, which may bring stability problems. In this paper, the sliding mesh technology is applied and the Unsteady Reynolds Averaged Navier-Stokes(URANS)method is adopted to evaluate the influence of ground on the aerodynamic performance of ducted fans. The time-averaged results sho...
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