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Additional measurements of the drag of surface irregularities in turbulent boundary layers

机译：对湍流边界层中表面不规则性的阻力的附加测量

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In connection with earlier measurements by K. Wieghardt the increase of the turbulent friction drag was determined for some additional types of common surface irregularities.

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作者
Tillmann, W;
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年度 1951
页码 1-36
总页数 36
原文格式 PDF
正文语种 eng
中图分类工业技术;
关键词
PLATES, FLAT - DRAG; SURFACE ROUGHNESS; SKIN FRICTION - PLATES, FLAT; PROTUBERANCES; BOUNDARY LAYER, TURBULENT - PLATES, FLAT;

机译：pLaTEs，FLaT - DRaG;表面粗糙度;皮肤摩擦 - 平板，平板;突起;边界层，湍流 - 板块，平面;

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专利

1. Wall-drag measurements of smooth- and rough-wall turbulent boundary layers using a floating element [J] . Baars W. J., Squire D. T., Talluru K. M., Experiments in Fluids: Experimental Methods and Their Applications to Fluid Flow . 2016,第5期

机译：使用浮动元件对光滑和粗糙壁湍流边界层进行壁阻力测量
2. Drag reduction by means of dimpled surfaces in turbulent boundary layers [J] . van Nesselrooij M., Veldhuis L. L. M., van Oudheusden B. W., Experiments in Fluids: Experimental Methods and Their Applications to Fluid Flow . 2016,第9期

机译：通过湍流边界层中的凹陷表面来减少阻力
3. Discussions: (1) "On the Axisymmetric Turbulent Boundary Layer Growth Along Long Thin Circular Cylinders," (Jordan, S. A., 2014, ASME J. Fluids Eng., 136(5), p. 051202) and (2) " Understanding Tow Tank Measurements of Total Drag for Long Thin Circular Cylinders," (Jordan, S. A., 2014, ASME J. Fluids Eng., 136(3), p. 031205) [J] . Afzal Noor, Seena Abu Journal of Fluids Engineering: Transactions of the ASME . 2015,第3期

机译：讨论：（1）“关于沿细长圆柱体的轴对称湍流边界层的生长”，（乔丹，南非，2014年，ASME J.流体工程，136（5），第051202页）和（2）“了解拖曳长细圆柱体总阻力的储罐测量”，（乔丹，南非，2014年，ASME J.流体工程，136（3），第031205页）
4. Skin Friction Drag Reduction in Turbulent Boundary Layer Conditions over Riblet Surfaces [C] . Hidetoshi Iijima, Hidemi Takahashi, Seigo Koga, AIAA SciTech forum and exposition . 2019

机译：Riblet表面上湍流边界层条件下的皮肤摩擦阻力减小
5. High-Reynolds-number flat plate turbulent boundary layer measurements and skin-friction drag reduction with gas or polymer injection. [D] . Winkel, Eric S. 2007

机译：高雷诺数平板湍流边界层测量以及通过注气或注聚合物减少表皮摩擦阻力。
6. Investigation of the Turbulent Boundary Layer Structureover a Sparsely Spaced Biomimetic Spine-Covered Protrusion Surface [O] . Guizhong Tian, Yesheng Zhu, Xiaoming Feng, 2021

机译：湍流边界层结构研究在稀疏间隔的仿生脊柱覆盖的突出表面
7. Measurements of the pressure distributions on two circular cylinders of diameter d, vertically immersed in a turbulent boundary layer, are performed for various cylinder spacings s and angles of attack φ. The characteristics of the drag and lift forces acting on the cylinder are classified into three regions : i.e., 1) 0°＜__〜φ＜__〜30°, 2) 30°＜__〜φ＜__〜120°and 3) 120°＜__〜φ＜__〜180°which are divided by the two zero-lift force lines. Moreover, it is found that the interference between two cylinders is almost negligible for s/d＞__〜4, except for the influence of the wake region of the upstream cylinder. [O] . 谷口清一, 坂本弘志, Seiichi TANIGUCHI, 1980

机译：对于不同的气缸间距s和迎角φ，对垂直浸入湍流边界层的直径为d的两个圆柱上的压力分布进行测量。作用在气缸上的阻力和提升力的特性分为三个区域：1）0°＜__ 〜φ ＜__ 〜30°，2）30°＜__ 〜φ ＜__ 〜120°和3） 120°＜__ 〜φ ＜__ 〜180°除以两条零升力线。而且，发现除了上游气缸的尾流区域的影响之外，对于s / d＞ __〜4，两个气缸之间的干扰几乎可以忽略。

Additional measurements of the drag of surface irregularities in turbulent boundary layers

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