Generation of Multiple Turbulent Flow States for the Simulations with Ensemble Averaging

Abstract

The paper deals with the problem of improving the performance of high-fidelity incompressible turbulent flow simulations on high performance computing systems. The ensemble averaging approach, combining averaging in time together with averaging over multiple ensembles, allows to speedup the corresponding simulations by increasing the computing intensity of the numerical method (flops per byte ratio). The current paper focuses on further improvement of the proposed computational methodology, and particularly, on the optimization of procedure to generate multiple independent turbulent flow states.