Global instability methods are becoming an increasing useful tool in
investigations of the stability of highly non-parallel flows.
In
this approach eigenfunctions are sought proportional to exp( Lambda .
t) and this leads to a partial differential eigenvalue problem in the
spatial variables to be solved. We will discuss our recent work on
applying these ideas to study a variety of quite different flow problems
including
the stability of lid-driven cavity flows as well as the stability of
subsonic and supersonic laminar separated flows past concave/convex
corners. |