  In this paper a procedure for large-eddy simulation (LES) has been devised
for fluid and magnetohydrodynamic turbulence in Fourier space using the
renormalized parameters. The parameters calculated using field theory have been
taken from recent papers by Verma [Phys. Rev. E, 2001; Phys. Plasmas, 2001]. We
have carried out LES on $64^3$ grid. These results match quite well with direct
numerical simulations of $128^3$. We show that proper choice of parameter is
necessary in LES.
