  Large Eddy Simulations (LES) of gyrokinetic plasma turbulence are
investigated as interesting candidates to decrease the computational cost. A
dynamic procedure is implemented in the GENE code, allowing for dynamic
optimization of the free parameters of the LES models (setting the amplitudes
of dissipative terms). Employing such LES methods, one recovers the free energy
and heat flux spectra obtained from highly resolved Direct Numerical
Simulations (DNS). Systematic comparisons are performed for different values of
the temperature gradient and magnetic shear, parameters which are of prime
importance in Ion Temperature Gradient (ITG) driven turbulence. Moreover, the
degree of anisotropy of the problem, that can vary with parameters, can be
adapted dynamically by the method that shows Gyrokinetic Large Eddy Simulation
(GyroLES) to be a serious candidate to reduce numerical cost of gyrokinetic
solvers.
