• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International Journal of Heat and Mass Transfer >Investigation on isothermal wicking performance within metallic weaves for screen channel liquid acquisition devices (LADs)
【24h】

Investigation on isothermal wicking performance within metallic weaves for screen channel liquid acquisition devices (LADs)

机译：屏幕通道液体采集设备（LAD）的金属编织内的等温芯吸性能研究

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

Wicking performance within the metallic screen is one of the key foundation to preventing gas penetration for screen channel liquid acquisition devices (LADs), which are designed to provide vapor free propellant for space crafts. In this study, based on the theoretical analysis on screen microscopic structure and wicking characteristics, a vertical isothermal wicking experiment was carried out using three selected Dutch Twill Weaves (DTWs) with HFE-7500 as the test fluid. According to the agreement between experimental results and the wicking theory, three macroscopic structural parameters named porosity, equivalent capillary diameter (ECD) and permeability were obtained both in warp and shute directions for 200 x 1400 DTW (woven with 200 warp wires and 1400 shute wires per square inch), 325 x 2300 DTW and 510 x 3600 DTW, respectively. Results show that, a finer mesh screen at the same direction is of a larger porosity, a smaller ECD and a smaller permeability, while the same mesh is of a smaller ECD and a larger permeability at the warp direction over the shute direction. In general, the wicking velocity is higher in a coarser mesh and is higher along the warp direction. (C) 2019 Elsevier Ltd. All rights reserved.
机译：金属筛网的芯吸性能是防止筛网通道液体采集装置（LAD）防止气体渗透的关键基础之一，该装置旨在为航天器提供无蒸气的推进剂。在这项研究中，基于对屏幕微观结构和芯吸特性的理论分析，以三种选定的荷兰斜纹织物（DTW）和HFE-7500作为测试液，进行了垂直等温芯吸实验。根据实验结果与芯吸理论之间的一致性，获得了200 x 1400 DTW（由200条经线和1400条闭合线编织而成）在经向和闭合方向上的三个宏观结构参数，分别为孔隙率，等效毛细管直径（ECD）和渗透率。每平方英寸），325 x 2300 DTW和510 x 3600 DTW。结果表明，相同方向的筛网越细，孔隙率越大，ECD值越小，渗透率越小；而在封闭方向上，相同的筛网的经向筛分的ECD越小，渗透率越大。通常，在较粗的网格中，芯吸速度较高，并且在变形方向上芯吸速度较高。 （C）2019 Elsevier Ltd.保留所有权利。

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