| タイトル | Drag measurements in tubular structure elements. Part 3: Effect of diameter and surface structure on the drag of cylindrical tubes |
| 本文（外部サイト） | http://hdl.handle.net/2060/19830008011 |
| 著者（英） | Hayn, F.; Schulz, G. |
| 著者所属（英） | NASA Headquarters |
| 発行日 | 1982-07-01 |
| 言語 | eng |
| 内容記述 | Measurements on five cylinders with different surfaces show that the supercritical drag coefficient tends to 0.5 for smooth cylinders with maximum critical Re number 4.16 times 10 to the -5 power and to 0.6 for point pattern surfaces with Re number reduced to 2.16 times 10 to the -5 power. For the other surfaces, with increasing roughness the critical Re number decrease while both minimum supercritical drag coefficients increase. |
| NASA分類 | AERODYNAMICS |
| レポートNO | 83N16282
NASA-TM-76937
NAS 1.15:76937
DVL-1-NK-1-68-34 |
| 権利 | No Copyright |
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