On secondary instability with respect to three dimensional subharmonic disturbances in boundary layer
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The general equations of secondary instability with respect to three-dimensional subharmonic disturbances are derived and applied to Blasius boundary layer in the present paper. The theoretical results of evolution and spatial distribution of subharmonic disturbances are compared with experimental data. The results show the important role of the process of route to transition in low-disturbance environments, and indicate that spatial mode is more rational than temporal mode.
Key Wordssecondary instability spatial mode temporal mode subharmonic disturbance
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