Andrey V. Garbaruk

TL;DR: In this paper, the authors proposed modifications of two recently developed hybrid CFD strategies, Delayed Detached Eddy Simulation (DDES) and DDES with Improved wall-modeling capability (IDDES), aimed at fine-tuning of these approaches to the k-ω SST background RANS model.

TL;DR: In this paper, the origins of transonic aerofoil buffet are linked to a global instability, which leads to shock oscillations and dramatic lift fluctuations, and the stability boundary, as a function of the Mach number and angle of attack, consists of an upper and a lower branch.

TL;DR: Global-stability theory is used to predict the onset of flow unsteadiness based on steady solutions of the Reynolds Averaged Navier-Stokes equations, and the results are in very good agreement with experiments and unsteady calculations.

TL;DR: In this paper, the authors present the status of a CFD/CAA numerical system developed by this team starting in 2001 and present the latest developments and achievements, such as an accurate algorithm for shock capturing in LES based on local automatic activation of flux-limiters; a two-step RANS-LES approach to complex nozzles; and a set of simulations of cold and heated jets from round and beveled single NOVs, sonic jets with shocks, jets from dual NOVs (co-planar and staggered, in still air and in co-

TL;DR: In this paper, two approaches to improve the behavior of DES in the region where an attached boundary layer (handled with RANS) flows into a separated shear layer (to be resolved using LES) are presented.