...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>European Journal of Mechanics, B. Fluids >An inverse problem for estimation of the drag and lift coefficients of wing sections
【24h】

An inverse problem for estimation of the drag and lift coefficients of wing sections

机译：用于估计翼形部分的拖曳系数的逆问题

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

An inverse analysis was conducted to estimate the drag and lift coefficients in incompressible turbulent flow over symmetric and asymmetric wing sections based on measurements of wake velocities. Inverse analysis is based on momentum and mass conservation laws over a control volume. The drag and lift coefficients can be determined as unknown parameters by the Levenberg-Marquardt algorithm. Several simulations were conducted by Open-FOAM software to appraise the inverse algorithm that was developed. Three different kinds of wing sections, namely NACA0009, NACA0018, and NACA23012, were selected for simulation and estimation of the forces. Each of sections was simulated at three different angles of attack. The estimated drag and lift coefficients were validated using values reported in the literature. It was shown that the proposed inverse method can estimate the drag and lift coefficients with very good accuracy. The results obtained were found to be independent of the location of the velocity measurements. (c) 2017 Elsevier Masson SAS. All rights reserved.
机译：进行逆分析以估计基于唤醒速度的测量值对称和不对称翼段的不可压缩湍流中的阻力和提升系数。逆分析基于对照量的动量和大规模保护法。通过Levenberg-Marquardt算法将拖曳系数确定为未知参数。开放式泡沫软件进行了几种模拟，以评估开发的逆算法。选择三种不同种类的翼片，即NaCA0009，NaCA0018和Naca23012用于模拟和估计力。每个部分都以三种不同的攻击角度模拟。使用文献中报告的值验证了估计的阻力和升力系数。结果表明，所提出的逆方法可以以非常好的准确度估计拖曳系数。发现得到的结果与速度测量的位置无关。 （c）2017年Elsevier Masson SAS。版权所有。

著录项

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