| タイトル | Stagnation region gas film cooling: Effects of dimensionless coolant temperature |
| 本文（外部サイト） | http://hdl.handle.net/2060/19830022689 |
| 著者（英） | Lecuyer, M. R.; Bonnice, M. A. |
| 著者所属（英） | Purdue Univ. |
| 発行日 | 1983-07-01 |
| 言語 | eng |
| 内容記述 | An experimental investigation was conducted to mode the film cooling performance for a turbine vane leading edge using the stagnation region of a cylinder in cross flow. Experiments were conducted with a single row of spanwise angled (25 deg) coolant holes for a range of the coolant blowing ratio and dimensionless coolant temperature with free stream-to-wall temperature ratio approximately 1.7 and Re sub D = 90000. the cylindrical test surface was instrumented with miniature heat flux gages and wall thermocouples to determine the percentage reduction in the Stanton number as a function of the distance downstream from injection (x/d sub 0) and the location between adjacent holes (z/S). Data from local heat flux measurements are presented for injection from a single row located at 5 deg, 22.9 deg, 40.8 deg, from stagnation using a hole spacing ratio of S/d = 5. The film coolant was injected with T sub c T sub w with a dimensionless coolant temperature in the range 1.18 or equal to theta sub c or equal to 1.56. The data for local Stanton Number Reduction (SNR) showed a significant increase in SNR as theta sub c was increased above 1.0. |
| NASA分類 | FLUID MECHANICS AND HEAT TRANSFER |
| レポートNO | 83N30960
NASA-CR-168197
NAS 1.26:168197 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/161933 |
