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首页> 外文期刊>Journal of Aircraft >Three-Dimensional Surface Evolution and Mesh Deformation for Aircraft Icing Applications
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Three-Dimensional Surface Evolution and Mesh Deformation for Aircraft Icing Applications

机译：飞机结冰应用的三维表面演化和网格变形

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摘要

This paper presents a mesh generation strategy that facilitates the numerical simulation of ice accretion on realistic aircraft configurations by automating the deformation of surface and volume meshes in response to the evolving ice shape. The discrete surface evolution algorithm is based on a face-offsetting strategy that uses an eigenvalue decomposition to determine 1)the nodal offset direction and 2)a null space in which the quality of the surface mesh is improved via point redistribution. A fast algebraic technique is then used to propagate the computed surface deformations into the surrounding volume mesh. Due to inherent limitations in the icing model employed here, there is no intent to present a tool to predict three-dimensional ice accretions but, instead, to demonstrate a meshing strategy for surface evolution and mesh deformation that is appropriate for aircraft icing applications. In this context, sample results are presented for a complex glaze-ice accretion on a rectangular-planform wing with a constant GLC-305 airfoil section and rime-ice accretion on a swept, tapered wing (also with a GLC-305 cross section). This meshing strategy is demonstrated to be robust and largely automatic, except for severe deformations.
机译：本文提出了一种网格生成策略，通过响应于不断演变的冰形状而自动进行表面网格和体网格的变形，从而简化了现实飞机配置上积冰的数值模拟。离散表面演化算法基于面部偏移策略，该策略使用特征值分解来确定1）节点偏移方向和2）零空间，在该空间中通过点重新分布可以改善表面网格的质量。然后使用快速代数技术将计算出的表面变形传播到周围的体积网格中。由于此处采用的结冰模型的固有局限性，因此无意提供一种预测三维冰块积聚的工具，而是展示适用于飞机结冰应用的表面演化和网格变形的网格化策略。在这种情况下，给出了在具有恒定GLC-305翼型截面的矩形平面机翼上形成复杂的釉冰和在后掠的锥形机翼（也具有GLC-305横截面）上形成的冰霜的样品结果。 。事实证明，这种网格划分方法非常健壮，并且除严重变形外，基本上都是自动的。

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  • 来源
    《Journal of Aircraft》 |2017年第3期|1047-1063|共17页
  • 作者

    Tong Xialoing; Thompson David; Arnoldus Qiuhan; Collins Eric; Luke Edward;

  • 作者单位

    Mississippi State Univ, Ctr Adv Vehicular Syst, POB 5405, Mississippi State, MS 39762 USA;

    Mississippi State Univ, Dept Aerosp Engn, POB A, Mississippi State, MS 39762 USA;

    Mississippi State Univ, Ctr Adv Vehicular Syst, POB 5405, Mississippi State, MS 39762 USA;

    Mississippi State Univ, Ctr Adv Vehicular Syst, POB 5405, Mississippi State, MS 39762 USA;

    Mississippi State Univ, Dept Comp Sci & Engn, POB 9637, Mississippi State, MS 39762 USA;

  • 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
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