林星箭, 何国毅. 双翼对称振动的推进特性及流场结构分析[J]. 南昌航空大学学报(自然科学版), 2015, 29(3): 13-20. DOI: 10.3969/j.issn.1001-4926.2015.03.003
引用本文: 林星箭, 何国毅. 双翼对称振动的推进特性及流场结构分析[J]. 南昌航空大学学报(自然科学版), 2015, 29(3): 13-20. DOI: 10.3969/j.issn.1001-4926.2015.03.003
LIN Xing-jian, HE Guo-yi. Analysis of Propulsive Performance and Flow Field Structures for Dual Symmetry-flapping Airfoils in Parallel Configuration[J]. Journal of nanchang hangkong university(Natural science edition), 2015, 29(3): 13-20. DOI: 10.3969/j.issn.1001-4926.2015.03.003
Citation: LIN Xing-jian, HE Guo-yi. Analysis of Propulsive Performance and Flow Field Structures for Dual Symmetry-flapping Airfoils in Parallel Configuration[J]. Journal of nanchang hangkong university(Natural science edition), 2015, 29(3): 13-20. DOI: 10.3969/j.issn.1001-4926.2015.03.003

双翼对称振动的推进特性及流场结构分析

Analysis of Propulsive Performance and Flow Field Structures for Dual Symmetry-flapping Airfoils in Parallel Configuration

  • 摘要: 双翼对称振动具有优越的推进特性。论文利用浸入边界法求解二维粘性不可压N-S方程,数值模拟了扑翼周围的非定常流场。以NACA0012翼型为例,研究了双翼对称振动的振幅、频率、间距和攻角等参数对推进特性和流场结构的影响。研究发现:在相同的参数空间下,相对于单翼振动,双翼对称振动中单个机翼会产生更大的推力、更强的涡和射流。

     

    Abstract: Dual symmetry-flapping airfoils in parallel configuration have superior propulsive performance.The unsteady flow fields around flapping airfoils are simulated by solving the 2D viscous incompressible N-S equations based on the immersed boundary method in this paper.The factors that influence propulsive performance and flow field structures, such as plunging amplitude, plunging reduced frequency, distance between the dual airfoils and angle of attack of airfoils, are studied by simulating the unsteady flow around the dual symmetry-flapping NACA0012 airfoils in parallel configuration.One of dual symmetry-flapping airfoils could achieve a higher thrust force、stronger vortexes and jet flows than the single flapping airfoil while the flapping parameters remained the same.

     

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