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An analysis is presented that examines the modulation of different instability modes that satisfy the triad resonance conditions in time and space in a three-dimensional, boundary-layer flow. Detuning parameters are used for the wavenumbers and frequencies. The nonparallelism of the mean flow is taken into account in the analysis. At the leading-edge region of an infinite swept wing, different resonant triads comprised of traveling cross-flow, stationary cross-flow, vertical vorticity, and Tollmien–Schlichting modes are investigated. The spatial evolution of the resonating triad components are studied.
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Nabil M. El-Hady (1989) studied this question.
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