...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Fluids and Structures >A multi-physics computational model of fuel sloshing effects on aeroelastic behaviour
【24h】

A multi-physics computational model of fuel sloshing effects on aeroelastic behaviour

机译：燃油晃荡对气动弹性行为的多物理场计算模型

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

A multi-physics computational method is presented to model the effect of internally and externally-carried fuel on aeroelastic behaviour of a pitch-plunge aerofoil model through the transonic regime. The model comprises three strongly coupled solvers: a compressible finite-volume Euler code for the external flow, a two-degree of freedom spring model and a smoothed particle hydrodynamics solver for the fuel. The smoothed particle hydrodynamics technique was selected as this brings the benefit that nonlinear behaviour such as wave breaking and tank wall impacts may be included. Coupling is accomplished using an iterative method with subcycling of the fuel solver to resolve the differing timestep requirements. Results from the fuel-structural system are validated experimentally, and internally and externally-carried fuel is considered using time marching analysis. Results show that the influence of the fuel, ignoring the added mass effect, is to raise the flutter boundary at transonic speeds, but that this effect is less pronounced at lower Mach numbers. The stability boundary crossing is also found to be less abrupt when the effect of fuel is included and limit cycles often appear. An external fuel tank is seen to exhibit a lower stability boundary, while the response shows a beating effect symptomatic of two similar frequency components, potentially due to interaction between vertical and horizontal fuel motion. (C) 2015 The Authors. Published by Elsevier Ltd.
机译：提出了一种多物理场的计算方法，通过跨音速模型来模拟内部和外部携带的燃料对桨叶型翼型模型的气动弹性行为的影响。该模型包括三个强耦合求解器：用于外部流动的可压缩有限体积Euler编码，用于弹簧的两自由度弹簧模型和用于流体的平滑粒子流体动力学求解器。选择平滑粒子流体动力学技术是因为它带来的好处是可以包括诸如波浪破碎和罐壁冲击等非线性行为。耦合是通过迭代方法与子求解器的子循环来完成的，以解决不同的时间步长要求。通过实验验证了燃料结构系统的结果，并使用时间行进分析法考虑了内部和外部携带的燃料。结果表明，燃料的影响忽略了附加的质量效应，而是在跨音速下提高了颤振边界，但是在较低的马赫数下，这种影响并不明显。当包含燃料的影响并且经常出现极限循环时，也发现稳定性边界的过渡不那么突然。可以看到外部燃油箱显示出较低的稳定性边界，而响应显示出两个相似频率分量的跳动效果，这可能是由于垂直和水平燃油运动之间的相互作用所致。 （C）2015作者。由Elsevier Ltd.发布

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