| タイトル | Heat-transfer and pressure distributions for laminar separated flows downstream of rearward-facing steps with and without mass suction |
| 本文（外部サイト） | http://hdl.handle.net/2060/19740023642 |
| 著者（英） | Brown, R. D.; Jakubowski, A. K. |
| 著者所属（英） | NASA Langley Research Center |
| 発行日 | 1974-08-01 |
| 言語 | eng |
| 内容記述 | Heat-transfer and pressure distributions were measured for laminar separated flows downstream of rearward-facing steps with and without mass suction. The flow conditions were such that the boundary-layer thickness was comparable to or larger than the step height. For both suction and no-suction cases, an increase in the step height resulted in a sharp decrease in the initial heat-transfer rates behind the step. Downstream, however, the heat transfer gradually recovered back to less than or near attached-flow values. Mass suction from the step base area increased the local heat-transfer rates; however, this effect was relatively weak for the laminar flows considered. Even removal of the entire approaching boundary layer raised the post-step heat-transfer rates only about 10 percent above the flatplate values. Post-step pressure distributions were found to depend on the entrainment conditions at separation. In the case of the solid-faced step, a sharp pressure drop behind the step was followed by a very short plateau and relatively fast recompression. For the slotted-step connected to a large plenum but without suction, the pressure drop at the base was much smaller and the downstream recompression more gradual than that for solid-faced step. |
| NASA分類 | FLUID MECHANICS |
| レポートNO | 74N31755
NASA-TN-D-7430
L-8790 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/193284 |
