| タイトル | Boundary layer control by acoustic excitation |
| 著者（英） | Nagel, R. T.; Papathanasiou, A. G. |
| 著者所属（英） | North Carolina State Univ. |
| 発行日 | 1986-07-01 |
| 言語 | eng |
| 内容記述 | An experimental program in which the effectiveness of a single large eddy break-up device (LEBU) blade is enhanced by proper acoustic excitation is described. An acoustic pulse, phase-locked to the incident large eddies and directed at the LEBU can enhance the large eddy cancellation process and can in effect lead to a decrease in the skin friction coefficient. Cross-correlation data and turbulence intensity measurements show that this acoustic excitation causes eddy cancellation at the trailing edge of the manipulator plate. It is concluded that both reduced turbulent boundary layer mixing and significant drag reduction can be achieved upon proper acoustic input to a LEBU. |
| NASA分類 | FLUID MECHANICS AND HEAT TRANSFER |
| レポートNO | 86A45439
AIAA PAPER 86-1954 |
| 権利 | Copyright |
