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机翼弹性变形对气动特性的影响
引用本文:贺济洲,叶正寅.机翼弹性变形对气动特性的影响[J].航空计算技术,2010,40(4):7-10.
作者姓名:贺济洲  叶正寅
作者单位:西北工业大学,翼型、叶栅空气动力学国防重点实验室,陕西,西安,710072
基金项目:国家自然科学基金资助项目 
摘    要:在非结构混合网格框架下,采用有限体积法求解了Euler方程和N-S方程。使用结构影响系数法计算机翼结构的弹性变形,通过动态网格技术实现了气动力与结构变形之间的耦合运算,计算和分析了在气动载荷作用下的机翼变形和此时的气动特性,算例分析表明:典型后掠机翼的弹性变形会使机翼产生了正的挠度和负的剖面扭转角,在弯曲和扭转的相互作用下,机翼的有效迎角减小,从而导致机翼的升力系数减小。在Euler方程和N-S方程算例中,考虑弹性变形条件下的机翼升力系数比刚性机翼的升力系数分别减小了25.3%和24.1%。

关 键 词:非结构网格  Euler/N-S方程  结构影响系数法  弹性机翼  动网格技术

Influence of Elastic Deformation on Aerodynamic Characteristics for Wings
HE Ji-zhou,YE Zheng-yin.Influence of Elastic Deformation on Aerodynamic Characteristics for Wings[J].Aeronautical Computer Technique,2010,40(4):7-10.
Authors:HE Ji-zhou  YE Zheng-yin
Institution:(National Key Laboratory of Aerodynamic Design and Research,NWPU,Xi′an 710072,China)
Abstract:The Euler equations and N-S equations have been numerically solved with the Finite Element Method based on the unstructured hybrid mesh.The aerodynamic characteristics of the elastic wing have been investigated,during which the structural influence coefficient method has been employed to get the elastic deformation of the wing and the coupling between aerodynamics and structural deformation have been performed with the help of Dynamic Mesh Method.The results show that: the elastic deformation can cause bend...
Keywords:unstructured hybrid mesh  Euler/N-S equations  structural influence coefficient method  elastic wing  dynamic mesh technique  
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