Abstract
The evolution of a controlled broadband wave packet in flat-plate and swept-wing supersonic boundary layers was experimentally investigated at Mach number M = 2. The wave packet was introduced into the boundary layer by a localized pulse electrical discharge. The structure and evolution downstream of the wave packet were studied by hot-wire measurements. It was found that the wave packet has a symmetric shape in a flat-plate boundary layer, whereas there is asymmetry in case of a swept-wing one. The spectral analysis of the development of different modes of the wave packet was provided.
Original language | English |
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Pages (from-to) | 115-123 |
Number of pages | 9 |
Journal | Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering |
Volume | 234 |
Issue number | 1 |
DOIs | |
Publication status | Published - 1 Jan 2020 |
Keywords
- boundary layer
- controlled experiment
- flat plate
- hot-wire measurements
- Supersonic flow
- swept wing
- wave packet
- WAVE-PACKETS
- INSTABILITY
- STABILITY
- TURBULENT-SPOT
- WAVEPACKETS
- TRANSITION
- DIRECT NUMERICAL-SIMULATION
- HOT-WIRE VISUALIZATION
- SHARP