...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Aerospace science and technology >Analysis of the post-flutter aerothermoelastic characteristics of hypersonic skin panels using a CFD-based approach
【24h】

Analysis of the post-flutter aerothermoelastic characteristics of hypersonic skin panels using a CFD-based approach

机译：基于CFD的方法分析高旋转性皮肤面板的颤动空气塑性特性

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

The present work aims to investigate the post-flutter aerothermoelastic behaviours of the hypersonic skin panels by using the integrated aerothermoelastic analysis framework developed in this paper. The aerodynamic loading and heating are computed simultaneously by solving Reynolds-averaged Navier-Stokes equations (RANS). The structural and thermal finite element models of a hypersonic skin panel are built and solved numerically to model the structural dynamics and thermal conduction. An implicit predictor-corrector scheme is employed to address the fluid-thermal-structural interactions. The aerothermoelastic characteristics of a two-dimensional hypersonic panel obtained using both one-way and two-way coupling strategies are systematically compared and discussed. The results show that: 1) The air viscosity delays the onset of flutter significantly, albeit aggravates thermal effect on the flutter instability; 2) The buckled panel can be similarly predicted by both the one-way and two-way coupling strategies. In contrast, the two-way coupling captures shockwave/boundary layer interactions leading to high local temperature; 3) The modal transitionis predicted when structural displacement feeds back into the aerothermoelastic analysis. 4) The variation of temperature gradient along the panel thickness is analogous to the time-domain displacement response as revealed by two-way coupling strategy; 5) One-way coupling predicts lower maximum Von Mises stress as compared with the two-way coupling counterpart under the conditions employed in the present study. (C) 2021 Elsevier Masson SAS. All rights reserved.
机译：目前的工作旨在通过使用本文开发的集成空气热弹性分析框架来研究超声波皮板的后颤动的空气热弹性行为。通过求解雷诺平均Navier-Stokes方程（RAN）来同时计算空气动力学装载和加热。超声波皮肤面板的结构和热有限元模型是在数值上进行制造和解决以模拟结构动力学和热传导。采用隐式预测器校正器方案来解决流体 - 热结构相互作用。系统地比较和讨论了使用单向和双向耦合策略获得的二维高超声音面板的空气热弹性特性。结果表明：1）空气粘度显着延迟颤动的发作，尽管对颤动不稳定性加剧热效应; 2）可以通过单向和双向耦合策略类似地预测串联面板。相比之下，双向耦合捕获冲击波/边界层相互作用，导致局部温度高; 3）当结构位移回到空气热弹性分析时预测的模态过渡。 4）沿着面板厚度的温度梯度的变化类似于由双向耦合策略所揭示的时域位移响应; 5）单向耦合与本研究中所采用的条件下的双向耦合对应相比，单向耦合预测更低的最大von误息。 （c）2021 Elsevier Masson SAS。版权所有。

著录项

  • 来源
    《Aerospace science and technology》 |2021年第11期|107076.1-107076.23|共23页
  • 作者

    Quan Enqian; Xu Min; Yao Weigang; Cheng Xiang;

  • 作者单位

    Northwestern Polytech Univ Xian 710072 Peoples R China;

    Northwestern Polytech Univ Xian 710072 Peoples R China;

    De Montfort Univ Comp Engn & Media Leicester LE1 9BH Leics England;

    CALT Sci & Technol Space Phys Lab Beijing 10076 Peoples R 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

    Aerothermoelasticity; Buckling; Transition; Chaos;

    机译：空气热弹性;屈曲;过渡;混乱;

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