Free Access
Fig. 4.
Unstable wavenumber ranges in the (αb, kz) plane for VA/Vb = 0.9. The outer boundary is defined by the left-hand side and the inner boundary by the right-hand side of condition (18). It is seen that below 
there is no instability, at 
there is a single unstable range of kz, and above 
there are two unstable ranges.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.