  Two-parametric eddy viscosity (TPEV) and other spectral characteristics of
two-dimensional (2D) turbulence in the energy transfer sub-range are calculated
from direct numerical simulation (DNS) with 512$^2$ resolution. The DNS-based
TPEV is compared with those calculated from the test field model (TFM) and from
the renormalization group (RG) theory. Very good agreement between all three
results is observed.
