• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International Conference on Environmental Systems >A CFD-Based Procedure for Evaluation of Ventilation of a Suddenly Opened Closeout Space and Its Application to the International Space Station
【24h】

A CFD-Based Procedure for Evaluation of Ventilation of a Suddenly Opened Closeout Space and Its Application to the International Space Station

机译：基于CFD的过程，用于评估突然打开的关闭空间及其在国际空间站的应用

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The aim of the study is to understand risks associated with a crew member accessing behind the closeout panel or space. Since there is a possibility that a particular closeout space is filled with a harmful gas mixture that is different from the cabin atmosphere, the time needed to ventilate this space should be evaluated. The three-dimensional Computational Fluid Dynamics (CFD) model developed for prediction of time-dependent turbulent flow and concentration fields inside and near a suddenly opened box is described in the paper. Several cases with different positions of the closeout space, initially filled with pure oxygen, are analyzed under the U.S. Laboratory (USL) ventilation conditions. A simplified flow model, where a suddenly opened box is ventilated by uniform external throughflow, is considered as well. Parametric computations performed for this case has resulted in a special procedure for quick evaluation of the closeout-space purging process, using solely the steady-state ventilation velocity distributions, computed previously for the USL module.
机译：该研究的目的是了解与船员联系相关的风险，该机组人员在收缩面板或空间后面访问。由于有可能填充了特定的离线空间，因此填充了与机舱气氛不同的有害气体混合物，因此应该评估通风所需的时间。在纸上描述了用于预测时间依赖性湍流流动和浓度场和突然打开的箱内的浓度场的三维计算流体动力学（CFD）模型。在美国实验室（USL）通风条件下分析了几种具有最初填充纯氧的特性空间不同位置的案例。一个简化的流量模型，其中突然打开的盒子通过均匀的外部通流通风，也被认为是均匀的。为这种情况执行的参数计算导致了用于快速评估关闭空间清除过程的特殊过程，仅使用先前为USL模块计算的稳态通风速度分布。

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