Abstract

Abstract An algebraic (zero-equation) transition model is developed to capture multiple mechanisms. The newly devised parameterized using “flow-structure-adaptive” variables and coupled with the truncated Spalart-Allmaras (SA) turbulence model. intermittency factor γ relies on “local flow information” directly linked “vorticity-based production” term of SA Splitting into lower higher regimes “f...

A method to bound the maximum energy perturbation for which regional stability of transitional fluid flow models can be guaranteed is introduced. The proposed exploits fact that model’s nonlinearities are both lossless and locally bounded uses axes lengths ellipsoids trajectory set containment as variables in conditions. Compared existing approaches based on quadratic constraints, leads an aver...