基于滑移网格和MRF模型的无人机气动分析  

Aerodynamic Analysis of Four-Rotor UAV Based on Sliding Grid Model and MRF Model

作　　者：王钰凯 康桂文[2] WANG Yukai;KANG Guiwen(College of Aeronautics and Astronautics,Shenyang Aerospace University,Shenyang 110000;General Aviation key Laboratory of Shenyang University of Aeronautics and Astronautics,Shenyang 110000)

机构地区：[1]沈阳航空航天大学航空宇航学院,沈阳110000 [2]沈阳航空航天大学通用航空重点实验室,沈阳110000

出　　处：《现代制造技术与装备》2022年第3期113-116,共4页Modern Manufacturing Technology and Equipment

摘　　要：采用基于滑移网格模型和MRF模型的数值模拟方法,分析并计算某四旋翼无人机处于悬停状态时的气动特征。结果表明,无人机处于悬停状态时,压力主要集中在螺旋桨叶片下表面和机身上表面,机身侧面则会产生低压区,同时在螺旋桨下方会形成一个速度高速区,并且验证了在螺旋桨旋转过程中机身上压力分布呈周期性变化。实验结果有助于无人机设计制造与安全飞行,也可以为无人机其他运动状态时的气动特性分析提供新思路。In this paper,the numerical simulation method based on slip grid model and MRF model is used to analyze and calculate the aerodynamic characteristics of a four-rotor UAV in hovering state.The results show that when the UAV is hovering,the pressure is mainly concentrated on the lower surface of the propeller blade and the upper surface of the fuselage,while a low pressure area is generated on the side of the fuselage,and a high speed area is formed under the propeller.At the same time,it verifies that the pressure distribution on the fuselage changes periodically during the propeller rotation.The experimental results are helpful for UAV design and manufacture and safe flight,and can also provide ideas for UAV aerodynamic characteristics analysis in other motion states.

关 键 词：四旋翼无人机 滑移网格模型 MRF模型 气动分析 

分 类 号：V279[航空宇航科学与技术—飞行器设计]