摘要
The secondary instability theory is used to study the behavior of spatially growingdisturbance in free turbulent shear layer.The numerical results indicate that secondaryinstability of subharmonic mode shows a strong choice of spanwise wavenumber andthe maximum growth two dimensional case.In contrast to thatsecondary instabilities of the fundamental mode occur in a wide scope of spanwisewavenumber.We have found so called translative atβ=0 and bifurcationphenomenon for an amplitude of the KH wave larger than 0.06.Dey words instability,large scale structure,bifurcation
The secondary instability theory is used to study the behavior of spatially growingdisturbance in free turbulent shear layer.The numerical results indicate that secondaryinstability of subharmonic mode shows a strong choice of spanwise wavenumber andthe maximum growth two dimensional case.In contrast to thatsecondary instabilities of the fundamental mode occur in a wide scope of spanwisewavenumber.We have found so called translative atβ=0 and bifurcationphenomenon for an amplitude of the KH wave larger than 0.06.Dey words instability,large scale structure,bifurcation
