| タイトル | Turbulent boundary layer on a full-coverage film-cooled surface: An experimental heat transfer study with normal injection |
| 本文（外部サイト） | http://hdl.handle.net/2060/19760010242 |
| 著者（英） | Moffat, R. J.; Kays, W. M.; Choe, H. |
| 著者所属（英） | Stanford Univ. |
| 発行日 | 1976-01-01 |
| 言語 | eng |
| 内容記述 | Heat transfer behavior was studied in a turbulent boundary layer with full-coverage film cooling through an array of discrete holes and with injection normal to the wall surface. Stanton numbers were measured for a staggered hole pattern with pitch-to-diameter ratios of 5 and 10, an injection mass flux ratio range of 0.1 to 1.0, and a range of Reynolds number 170 thousand to 5 million. Air was used as the working fluid with the mainstream velocity varied from .14 to 33.5 m/sec (30 to 110 ft/sec). The data were taken for secondary injection temperatures equal to the wall temperature and also equal to the mainstream temperature. By use of linear superposition theory, the data may be used to obtain Stanton number as a continuous function of the injectant temperature. The heat transfer coefficient is defined on the basis of a mainstream-to-wall temperature difference. This difinition permits direct comparison of performance between film cooling and transpiration cooling. |
| NASA分類 | FLUID MECHANICS AND HEAT TRANSFER |
| レポートNO | 76N17330
HMT-22
NASA-CR-2642 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/187142 |
