摘要
多旋翼飞行器主要由旋翼桨叶为其提供拉力。在旋翼桨叶设计阶段,能准确地预测出桨叶的效率、拉力、功率和扭矩等性能参数是十分必要的。本文采用基于MRF模型的CFD数值分析,对直径为735mm、梢部桨叶角为7°、根部桨距角为22°的木质旋翼桨叶进行气动特性分析。在西北工业大学NF-3风洞的三元试验段测量了风速为零时该旋翼桨叶的气动性能数据,包括:拉力、扭矩、功率、拉力功率比。试验结果与基于MRF模型的数值模拟方法结果有较好的一致性,证明了本文采用基于MRF模型的CFD数值模拟方法研究桨叶气动特性的正确性和实用性。
The thrust of multi rotor aircraft is mainly provided by rotor blades.On the stage of rotor blade design,it is very necessary to accurately predict the performance parameters of blade,such as efficiency,thrust force,power and torque etc.Adopting computational fluid dynamics（CFD）numerical method based on multi-reference frame（MRF）model,aerodynamic performance analysis was carried out,for a wooden rotor blade which diameter is 735 mm,tip blade angle is 7 drgrees and blade root pitch angle is 22 degrees.Aerodynamic performance data of rotor blade specimen,including thrust force,torque,power and thrust power ratio,were measured by using 3-dimensional measurement section of NF-3 wind tunnel at Northwest Polytechnical University.Experimental results are in goodagreement with numerical analysis results based on MRF model,which demonstrates the correctness and practicability of CFD numerical analysis method based on MRF model.
出处
《实验力学》
CSCD
北大核心
2017年第6期859-864,共6页
Journal of Experimental Mechanics
基金
辽宁省自然科学基金计划资助(2013024018)
