  With the continuing progress in large eddy simulations (LES), and ever
increasing computational resources, it is currently possible to numerically
solve the time-dependent and anisotropic large scales of turbulence in a large
variety of flows. For some applications this large-scale resolution is
satisfactory. However, a wide range of engineering problems involve flows at
very large Reynolds numbers where the subgrid scale dynamics of a practical LES
are critically important to design and yet are out of reach given the
computational demands of solving the Navier Stokes equations; this difficulty
is particularly relevant in wall-bounded turbulence where even the large-scales
are often below the implied filter width of modest cost wall modeled LES
(WMLES). In this paper we briefly introduce a scale enrichment procedure which
leverages spatially and spectrally-localized Gabor modes. The method provides a
physically consistent description of the small scale velocity field without
solving the full non-linear equations. The enrichment procedure is appraised
against its ability to predict small scale contributions to the pressure field.
We find that the method accurately extrapolates the pressure spectrum and
recovers pressure variance of the full field remarkably well when compared to a
computationally expensive, highly resolved LES. The analysis is conducted both
in \textit{a priori} and \textit{a posteriori} settings for the case of
homogeneous isotropic turbulence (HIT).

Fluid Dynamics