Evaluation of two-equation turbulence models for predicting transitional flows

Assessment of intermittency transport equations for modeling transition in boundary layers subjected to freestream turbulence

“…This instability becomes three-dimensional and non-linear by the formation of vortex loops and there appears the formation of turbulent spots in the highly fluctuating portion of the flow. These turbulent spots spread laterally downstream until the entire boundary layer is engulfed (Abid, 1993). If the freestream turbulence intensity exceeds 1%, the bypass transition occurs in which case the transition takes place without the appearance of T-S waves.…”

Numerical investigation of semi-confined turbulent slot jet impingement on a concave surface using an Al2O3–water nanofluid

“…Following the previous studies, Ahmadi et al [17] tested the capability of five low Reynolds k-ε models including Abid (AB) [23], Lam-Bremhorst (LB) [24], Launder-Sharma (LS) [18], Abe-Kondoh-Nagano (AKN) [25], Chang-Hsieh-Chen (CHC) [26,27] with the Yap correction in the prediction of Nusselt number distribution on the concave surface. Their results showed that the combination of the LS model (which is based on the original model of Jones and Launder [28]) and Yap correction is in good agreement with experimental data.…”

Performance of two equation turbulence models for prediction of flow and heat transfer over a wall mounted cube

“…1 among the available models viz. (1) standard k-e model (2) low Reynolds number k-e model [16] (3) non-linear k-e model [17] (4) Standard k-x model and (5) An improved k-x model [18].…”