...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Aerospace science and technology >Numerical investigation of unsteady aerodynamic characteristics of a pitching missile
【24h】

Numerical investigation of unsteady aerodynamic characteristics of a pitching missile

机译：俯仰导弹非定常气动特性的数值研究。

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Three-dimensional Reynolds averaged Navier-Stokes numerical simulations were carried out to predict the aerodynamic loads of a pitching winged missile based on the finite volume method. The Baldwin-Lomax eddy viscosity model with the modifications suggested by Degani and Schiff was used here. The computational results of the aerodynamic loads of a slender revolution body are also given, and agreed well with the experiment data. The unsteady aerodynamics about the winged missile, which is oscillated in pitching with different frequencies, with different center of rotation and at different range of angle of attack is shown in the paper. It is found that from the computational results, the unsteady hysteresis of the lift, drag and pitch moment coefficients vary not only with the frequency, but also with the position about which the missile performs the oscillatory motions. Although the angle of attack range at which the missile oscillate in pitching are different, the derivative of lift coefficients with respect to the angle of attack is the same for the same phase of oscillating under the same reduced frequency condition.
机译：进行了三维雷诺平均Navier-Stokes数值模拟，以基于有限体积法预测俯仰翼导弹的气动载荷。此处使用了Degani和Schiff建议的修改后的Baldwin-Lomax涡流粘度模型。给出了细长旋转体气动载荷的计算结果，与实验数据吻合良好。本文显示了有翼导弹的不稳定空气动力学特性，它以不同的频率，不同的旋转中心和不同的攻角范围在俯仰中振荡。从计算结果中发现，升力，阻力和俯仰力矩系数的不稳定磁滞不仅随频率变化，还随导弹执行振荡运动的位置而变化。尽管导弹在俯仰时振荡的迎角范围是不同的，但在相同的降低频率条件下，对于相同的振荡相位，升力系数相对于攻角的导数是相同的。

著录项

  • 来源
    《Aerospace science and technology》 |2011年第2期|p.129-136|共8页
  • 作者

    Yang Lizhi; Wang Minghai; Gao Zhenghong;

  • 作者单位

    Xi'an Research Inst. of Hi-Tech, Hongqing Town, Xi'an 710025, China;

    Xi'an Research Inst. of Hi-Tech, Hongqing Town, Xi'an 710025, China;

    Department of Aircraft Engineering, Northwestern Polytechnical University, Xi'an 710072, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    unsteady flow; computational method; hysteresis;

    机译：非定常流动;计算方法;磁滞;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号