Entropy-Layer Influence on Single-Fin and Double-Fin/Boundary-Layer Interactions
| Autor: | Vladimir Nikolaevich Radchenko, I. V. Struminskaya, Vladimir Evguenyevich Mosharov, A. S. Skuratov, Ivan Vladimirovich Egorov, Volf Ya. Borovoy |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Flow visualization
020301 aerospace & aeronautics Leading edge Fin Materials science business.industry Turbulence Aerospace Engineering Reynolds number Laminar flow 02 engineering and technology Mechanics 01 natural sciences 010305 fluids & plasmas Physics::Fluid Dynamics symbols.namesake Boundary layer Optics 0203 mechanical engineering 0103 physical sciences Laminar-turbulent transition symbols business |
| Zdroj: | AIAA Journal. 54:443-457 |
| ISSN: | 1533-385X 0001-1452 |
| DOI: | 10.2514/1.j053656 |
| Popis: | The influence of the entropy layer generated by the blunted-plate leading edge on the flow over a single fin or pair of fins installed on the plate is studied experimentally and numerically. Experiments are carried out in a Ludwieg-type wind tunnel at Mach numbers of M∞=5, 6, and 8 and Reynolds numbers from 7×106 to 27×106 at turbulent, transitional, and laminar boundary layers on the plate in front of the fins. Panoramic optical methods are used for measurements of heat flux and pressure. Flow visualization is done as well. It is shown that even a small blunting of the plate leading edge considerably changes the heat transfer, pressure, and shear-stress distributions at the shock wave/boundary-layer interactions; and, under certain conditions, it causes changes of the flow structure. |
| Databáze: | OpenAIRE |
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