Next: 0 is instable
Up: Stability of the solution
If sigma is negative, the amplitude of the perturbation will decrease. The system is in this
. This assumption is verified if the no-dimensionnal
number is inferior to a value.
The condition of stability for is :
As we have fixed and equal to 1, the condition of stability becomes :
, the soution is stable for all pertubations.
See part 3.1