THE ROLE OF TWO-DIMENSIONAL ROUGHNESS ELEMENT IN THE LAMINAR-TURBULENT PROCESS IN THE FAVORABLE PRESSURE GRADIENT OF THE SWEPT WING
The material was received by the Editorial Board: 26.11.2014
In the article using a liquid crystal thermography investigated the development of stationary and secondary disturbances, which were excited by cylindrical and two-dimensional roughness elements. It was shown, that two-dimensional roughness element has a destabilizing effect on disturbances, induced by cylindrical roughness element. Also the twodimensional roughness element is able to excite the stationary structures, and then the secondary disturbances the frequency interval of which is lower than in the case of stationary vortices excitation by cylindrical roughness element. Keywords:
laminar-turbulent transition, swept wing, roughness, cross-flow instability, secondary instability, liquid crystal thermography, three-dimensional boundary layer.
УДК 532.526.3
THE ROLE OF TWO-DIMENSIONAL ROUGHNESS ELEMENT IN THE LAMINAR-TURBULENT PROCESS IN THE FAVORABLE PRESSURE GRADIENT OF THE SWEPT WING References: Tolkachev S. N., Kaprilevskaya V. S., Kozlov V. V. THE ROLE OF TWO-DIMENSIONAL ROUGHNESS ELEMENT IN THE LAMINAR-TURBULENT PROCESS IN THE FAVORABLE PRESSURE GRADIENT OF THE SWEPT WING. Vestnik NSU. Series: Physics. 2014, vol. 9, no. 4. P. 65–73 (in Russ.). DOI: 10.54362/1818-7919-2014-9-4-65-73