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Numerical Simulations for Transport Aircraft High-Lift Configurations Using Cartesian Grid Methods

机译：笛卡尔网格法对运输飞机高起落构型的数值模拟

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摘要

Computations of complex flow fields around three-dimensional high-lift configurations using an adaptive Cartesian grid method and a cell-center finite-volume method are carried out and compared to wind-tunnel experiments. Because of complexities in both configuration and flowfield, there are great difficulties in numerical simulation of flowfields around transport aircraft high-lift configurations with leading slats and trailing flaps. In this paper, a modified Cartesian grid method is introduced to simulate the complex flow using the adaptive grid technique. The main emphasis is given to a multizone technique and a face-to-face algorithm and its applications. The multizone technique is employed to simplify the great difficulties in grid generation. The face-to-face algorithm is constructed to precisely establish the information exchange of flowfields on interfaces between zones. We solve Euler equations with a conventional algorithm, which includes a cell-center finite-volume method and an explicit four-stage Runge-Kutta time-stepping scheme in combination with a dual-time stepping approach. For three three-dimensional high-lift configurations, the numerical results are presented and analyzed. The computational results are in good agreement with the available experimental data show that the present method is feasible and effective for solving the flow around complex three-dimensional high-lift systems.
机译：使用自适应笛卡尔网格方法和单元中心有限体积方法对三维高升结构周围的复杂流场进行了计算，并与风洞实验进行了比较。由于构型和流场的复杂性，在具有前导板和后襟翼的运输机高升构型周围的流场的数值模拟中存在很大的困难。本文介绍了一种改进的笛卡尔网格方法，以利用自适应网格技术来模拟复杂的流动。主要重点是多区域技术和面对面算法及其应用。采用多区域技术来简化网格生成中的巨大困难。构建面对面算法以精确地建立区域之间接口上流场的信息交换。我们使用常规算法求解Euler方程，该算法包括单元中心有限体积方法和显式的四阶段Runge-Kutta时间步进方案，并结合了双重时间步进方法。对于三个三维高升力配置，给出了数值结果并进行了分析。计算结果与现有实验数据吻合良好，表明该方法对于解决复杂的三维高扬程系统的绕流问题是可行和有效的。

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  • 来源
    《Journal of Aircraft》 |2006年第4期|p.1103-1111|共9页
  • 作者

    Weimin Sang; Fengwei Li;

  • 作者单位

    Northwestern Polytechnical University, 710072 Xi'an, Shaanxi, People's Republic of 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 航空;
  • 关键词

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