The para-real algorithm applied to a simple drift-wave turbulence model for transport timescale studies

We will present the results of applying the para-real algorithm\footnote{Martin J. Gander et al, Siam J. Sci. Comput. Vol.29, No.2, pp.556-578} to a fluid turbulence code. This new technique efficiently parallelizes the time domain and has been found to significantly reduce the computational wall time. If successfully applied, this will allow study of the turbulent transport dynamics on transport time scales - something that has heretofore been very difficult. We apply this algorithm to simulations of drift-wave turbulence\footnote{D.E. Newman et al, Phys. Fluids B 5, 1140 (1993)} in slab geometry as a function of the model and sheared flow. Preliminary science results as well as computational results will be presented. These include cases in which the relative dominance ExB nonlinearities will be tuned artificially and the transport exponents will be explored as the sheared flow changes.