An algebraic transition model for fluid flows

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 “free-stream intensity” enhances coefficient calibration predictions various phenomena (“natural, bypass, separation-induced, wake-induced”, etc.) encountered in transitional flows. Simulations approve that new formulation provides good correspondence other models, available literature.