  A hybrid RANS/LES framework is developed based on a recently proposed
Improved Delayed Detached Eddy Simulation (IDDES) model combined with a variant
of recycling and rescaling method of generating inflow turbulence. This
framework was applied to investigate spatially developing flat plate turbulent
boundary layer up to momentum thickness Reynolds number, $R_{\theta} = 31000$
and the results are compared with the available experimental data. Good
agreement was obtained for the global quantities such as mean velocity and skin
friction at all momentum thickness Reynolds numbers considered. The trends
obtained for the Reynolds stress components are in the right direction. At high
$R_{\theta$}, the shear stress distribution shows significant differences close
to the wall indicating scope for further improving the near-wall modeling in
such methods.
