[Shenren_CN]

In this validation example provided by NASA, that runs SA turbulence
model RANS on zero pressure gradient flat plate,

http://turbmodels.larc.nasa.gov/flatplate_sa.html

how come the RANS solver can still converge to steady state solution
when Re is around 5 million?

If even (much) finer mesh is used, i.e., DNS, I suppose one shall pick
up the unsteadiness. The question is, how fine the mesh needs to be
in order to NOT converge to steady state? Is it possible to predict this
critical mesh density a priori?

Cheers,
Shenren