Marco Artiano has published his first paper ‘On the Performances of Standard and Kinetic Energy Preserving Time-Integration Methods for Incompressible-Flow Simulations’ in Flow, Turbulence and Combustion

Marco Artiano has published his first paper On the Performances of Standard and Kinetic Energy Preserving Time-Integration Methods for Incompressible-Flow Simulations extending results of his MSc thesis in aerospace engineering at University of Naples Federico II (Italy) together with Carlo De Michele, Francesco Capuano, and Gennaro Coppola in Flow, Turbulence and Combustion.

The effects of kinetic-energy preservation errors due to Runge–Kutta (RK) temporal integrators have been analyzed for the case of large-eddy simulations of incompressible turbulent channel flow. Simulations have been run using the open-source solver Xcompact3D with an implicit spectral vanishing viscosity model and a variety of temporal Runge–Kutta integrators. Explicit pseudo-symplectic schemes, with improved energy preservation properties, have been compared to standard RK methods. The results show a marked decrease in the temporal error for higher-order pseudo-symplectic methods; on the other hand, an analysis of the energy spectra indicates that the dissipation introduced by the commonly used three-stage RK scheme can lead to significant distortion of the energy distribution within the inertial range. A cost-vs-accuracy analysis suggests that pseudo-symplectic schemes could be used to attain results comparable to traditional methods at a reduced computational cost.