• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国政府科技报告 >Relationship Between Frictional Resistance and Roughness for Surfaces Smoothed by Sanding.
【24h】

Relationship Between Frictional Resistance and Roughness for Surfaces Smoothed by Sanding.

机译：砂磨平滑表面摩擦阻力与粗糙度的关系。

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

摘要

An experimental investigation has been carried out to document and relate the frictional resistance and roughness texture of painted surfaces smoothed by sanding. Hydrodynamic tests were carried out in a towing tank using a flat plate test fixture towed at a Reynolds number (Re(L)) range of 2.8 x 10(6) - x 5.5 x 10(6) based on the plate length and freestream velocity. Results indicate an increase in frictional resistance coefficient (C(F)) of up to 7.3% for an unsanded, as-sprayed paint surface compared to a sanded, polished surface. Significant increases in C(F) were also noted on surfaces sanded with sandpaper as fine as 600-grit as compared to the polished surface. The results show that, for the present surfaces, the centerline average height (R(alpha)) is sufficient to explain a large majority of the variance in the roughness function (DeltaU(+)) in this Reynolds number range.

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