Abstract Simulation of C-130 H/J troop doors and cargo ramp flow fields
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Aerospace science and technology >Simulation of C-130 H/J troop doors and cargo ramp flow fields
【24h】

Simulation of C-130 H/J troop doors and cargo ramp flow fields

机译：C-130 H / J部队门和货物坡道流场的仿真

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

AbstractThis article presents the results of a continuing computational effort to understand the flow field characteristics of a C-130 Hercules aircraft configured for personnel airdrop operations. Flight operations with either the troop door or cargo open lead to vortical structures and unsteady flows which can adversely affect airdrop operations. Simulation results using the CFD solverKestrel, developed within the High Performance Computing Modernization Program CREATETM-AV program, show vorticity generated behind the open cargo door and with the flaps extended, a relatively strong vortex forms along the fuselage which traverses above the troop door into the upsweep section of the aircraft tail. Open troop door simulations capture large velocity gradients and unsteadiness for configurations with and without actuator disk propeller models and with and without sideslip. Simulations are computed on both converged hybrid meshes on the order of 100 × 106cells and near-body/Cartesian off-body grids, and these results reconfirm that vortex modeling is dependent on mesh resolution around troop door or cargo ramp. The addition of a refined mesh near the troop door, in conjunction with using a delayed detached-eddy turbulence model, provided highly resolved flow physics in this region of interest.
机译： 摘要 本文介绍了为了解配置用于人员空投操作的C-130大力神飞机的流场特性而进行的持续计算工作的结果。在部队门或货物打开的情况下进行飞行操作会导致旋涡结构和不稳定流量，可能会对空投操作产生不利影响。使用在高性能计算现代化程序CREATE TM -AV程序中开发的CFD求解器 Kestrel 进行的仿真结果显示敞开的货舱门后面产生的涡流，随着襟翼的延伸，沿着机身形成了一个相对较强的涡流，该涡流从部队门上方穿过，进入飞机机尾的后掠区域。在有和没有执行器盘螺旋桨模型以及有和没有侧滑的情况下，开放式部队门模拟都能捕获大的速度梯度和不稳定。在大约100×10 6 个单元和近体/笛卡尔离体网格的两个聚合混合网格上计算模拟，这些结果再次证实了涡旋建模取决于部队门或货物坡道周围的网格分辨率。在部队门附近添加精制网格，并结合使用延迟分离涡流模型，在此感兴趣的区域提供了高度解析的流动物理学。

著录项

相似文献

  • 外文文献
  • 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