• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Mathematical Problems in Engineering >A Comparative Study on Evaluation Methods of Fluid Forces on Cartesian Grids
【24h】

A Comparative Study on Evaluation Methods of Fluid Forces on Cartesian Grids

机译：笛卡尔网格上流体力评估方法的比较研究

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

We investigate the accuracy and the computational efficiency of the numerical schemes for evaluating fluid forces in Cartesian grid systems. A comparison is made between two different types of schemes, namely, polygon-based methods and mesh-based methods, which differ in the discretization of the surface of the object. The present assessment is intended to investigate the effects of the Reynolds number, the object motion, and the complexity of the object surface. The results show that themesh-based methods work as well as the polygon-based methods, even if the object surface is discretized in a staircase manner. In addition, the results also show that the accuracy of the mesh-based methods is strongly dependent on the evaluation of shear stresses, and thus they must be evaluated by using a reliable method, such as the ghost-cell or ghost-fluid method.
机译：我们研究了笛卡尔网格系统中用于评估流体力的数值方案的准确性和计算效率。比较了两种不同类型的方案，即基于多边形的方法和基于网格的方法，它们在对象表面的离散化方面有所不同。本评估旨在研究雷诺数，物体运动和物体表面复杂性的影响。结果表明，即使对象表面以阶梯方式离散，基于网格的方法也比基于多边形的方法有效。此外，结果还表明，基于网格的方法的精度在很大程度上取决于剪切应力的评估，因此必须使用可靠的方法（例如，幻影单元法或幻影流体法）对其进行评估。

著录项

  • 来源
    《Mathematical Problems in Engineering》 |2017年第7期|8314615.1-8314615.15|共15页
  • 作者

    Nonomura Taku; Onishi Junya;

  • 作者单位

    Japan Aerosp Explorat Agcy, Inst Space & Astronaut Sci, Yoshinodai 3-1-1 1816, Sagamihara, Kanagawa, Japan|Tohoku Univ, Dept Aerosp Engn, Sendai, Miyagi, Japan;

    Univ Tokyo, Inst Ind Sci, Chuo Ku, 7-1-26 Minatojima Minimi Machi, Kobe, Hyogo, Japan;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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