THE INVESTIGATION OF STAGES OF CROSS FLOW INSTABILITY DEVELOPING ON THE LEADING EDGE OF THE SWEPT WING BY LIQUID-CRYSTAL THERMOGRAPHY METHOD

Stepan N. Tolkachev
1. Khristianovich Institute of Theoretical and Applied Mechanics SB RAS Novosibirsk, Russian Federation
2. Novosibirsk State University Novosibirsk, Russian Federation
tolkachevst@gmail.com
Vasily N. Gorev
1. Khristianovich Institute of Theoretical and Applied Mechanics SB RAS Novosibirsk, Russian Federation
2. Novosibirsk State University Novosibirsk, Russian Federation
gorev_vasiliy@ngs.ru
Viktor V. Kozlov
1. Khristianovich Institute of Theoretical and Applied Mechanics SB RAS Novosibirsk, Russian Federation
2. Novosibirsk State University Novosibirsk, Russian Federation
kozlov@itam.nsc.ru
The material was received by the Editorial Board: 13.03.2012
The liquid crystal thermography technique was tested for the investigation of stages of stationary disturbance developing after the roughness element and for indication of turbulence on the swept wing leading edge. It was shown, that stationary disturbance is easy to excite by the roughness element, develops along the streamline. The stationary behavior dependence from the roughness element size was investigated. It was determined, that the turbulence doesn’t develop along the leading edge in the explored speed range.

Keywords:
swept wing, cross-flow instability, leading edge, visualization, liquid-crystal thermography, roughness, turbulence, streamwise vortices.
УДК 532.526

THE INVESTIGATION OF STAGES OF CROSS FLOW INSTABILITY DEVELOPING ON THE LEADING EDGE OF THE SWEPT WING BY LIQUID-CRYSTAL THERMOGRAPHY METHOD
References: Tolkachev S. N., Gorev V. N., Kozlov V. V. THE INVESTIGATION OF STAGES OF CROSS FLOW INSTABILITY DEVELOPING ON THE LEADING EDGE OF THE SWEPT WING BY LIQUID-CRYSTAL THERMOGRAPHY METHOD. Vestnik NSU. Series: Physics. 2012, vol. 7, no. 2. P. 80–84 (in Russ.). DOI: 10.54362/1818-7919-2012-7-2-80-84