• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Advances in Compact Heat Exchangers >Chapter 9 Power Spectrums and Strouhal Number Distributions for Turbulent Fully- Developed Flows in Rectangular Ducts with Spatially-Periodic Plate Inserts
【24h】

Chapter 9 Power Spectrums and Strouhal Number Distributions for Turbulent Fully- Developed Flows in Rectangular Ducts with Spatially-Periodic Plate Inserts

机译：第9章具有空间周期性板插入的矩形管道中湍流充分展开的流动的功率谱和Strouhal数分布

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

Single hot-wire measurements of turbulent, fully-developed flows of air in a straight rectangular duct with spatially-periodic plate inserts are presented. The objective is to provide experimental results that could be used to validate mathematical models and numerical solution methods formulated for the prediction of such flows in the cores of compact heat exchangers. The following values of the dimensionless geometric parameters, normalized with respect to the full height of the duct, were considered in this work: width of the duct cross section = 6.063; plate length = 1.001: plate thickness = 0.2526: and inter-plate spacing = 1.004. The Reynolds number, based on average velocity at the minimum cross-sectional area and the hydraulic diameter, ranged from 2000 to 30000. The results presented here include ensemble-averaged power spectrums and Strouhal number distributions at multiple positions in the duct. These results are repeatable. vertically and laterally symmetric at corresponding points in the central region of the duct cross section, and spatially periodic in successive geometrical modules.
机译：提出了在带有空间周期板插入件的直矩形管道中对湍流，充分展开的气流进行的单热线测量。目的是提供可用于验证数学模型和数值求解方法的实验结果，这些数学模型和数值求解方法可用于预测紧凑型换热器芯中的此类流量。在这项工作中考虑了以下相对于导管全高标准化的无量纲几何参数值：导管横截面宽度= 6.063；板长度= 1.001：板厚度= 0.2526：板间间距= 1.004。雷诺数基于最小横截面积的平均速度和水力直径，范围为2000到30000。此处显示的结果包括集合平均功率谱和管道中多个位置的Strouhal数分布。这些结果是可重复的。在管道横截面的中心区域中的对应点处，垂直和横向对称，在连续的几何模块中在空间上周期性。

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