Amplitude method of prediction of laminar-turbulent transition on a swept-wing

摘要: The amplitudemethod of prediction laminar-turbulent transition on a swept-wing initiated by the simultaneous action free-stream turbulence and surface roughness is developed. Generation growing intrinsic perturbations in boundary layer described mechanism distributed generation, i.e., an external perturbation generates instability mode with same wavelength frequency. occurs small neighborhood neutral point at which parameters modes coincide. development proper nonlinear method parabolized stability equations (PSE). criterion combined amplitude. begins sum amplitudes steady traveling reaches critical value.