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“钻石背”弹翼气动特性数值模拟研究 被引量:6

Numerical Simulation for Aerodynamic Characteristics of Diamondback Wing
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摘要 用计算流体力学与阻力系数工程预估相结合的方法研究了"钻石背"弹翼前、后翼条之间气动干扰以及翼型、前后翼条的相对高度对气动特性的影响。计算结果与实验结果对比表明,在中小攻角,数值计算与阻力系数工程预估相结合的方法是可信的;采用亚声速低阻NACA64-108翼型可明显地增大"钻石背"弹翼的升力,减小阻力,增大升阻比;钻石背"弹翼前、后翼条之间的气动干扰,使升力减小,阻力增大;前翼条在上,后翼条在下的配置能减弱这种不利的气动干扰,并且在计算的范围内,后翼条至前翼条的垂直位置ΔH为9mm时,"钻石背"弹翼前、后翼条之间的气动干扰最小,升阻比最大。 Computational fluid dynamics and semi-empiric method were used to study the effect of Diamondback wing geometric parameters on its aerodynamic characteristics.The comparison of calculation and experiment results indicate that this method is accurate for the small and medium angle of attack.The aerofoil NACA64-108 can obviously increase the lift and lift-drag ratio of Diamondback wing.The aerodynamic interference between the front-wing-strip and rear-wing-strip will reduce the lift and increase the drag.The configuration that the front-wing-strip is higher than the rear-wing-strip can reduce the interference between two strips.If the height difference between two strips is 9 mm,the aerodynamic interference is minimum,and the lift-drag ratio reaches maximum.
出处 《兵工学报》 EI CAS CSCD 北大核心 2010年第8期1048-1052,共5页 Acta Armamentarii
基金 国家部委预先研究项目(4013130302)
关键词 流体力学 “钻石背”弹翼 气动特性 数值计算 fluid mechanics Diamondback wing aerodynamic characteristics numerical calculation
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参考文献3

  • 1吴小胜 雷娟棉 吴甲生.钻石背弹翼的气动特性和颤振特性.兵工学报,2006,27(6):137-141.
  • 2雷娟棉,吴甲生.钻石背弹翼外形参数对气动特性的影响[J].北京理工大学学报,2006,26(11):945-948. 被引量:14
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