.... The large Eddy simulation (LES) reacting flow results for a vane tip angle of 60° are compared with test data and presented at multiple cross planes. Findings The numerical simulations were carried out on a nonreacting single helical axial swirler for various vane tip angles, such as 40°, 50°, 55...

... is to document modeling practices for a large eddy simulation (LES) type grid, predict the confinement effects of a single swirler lean direct injection (LDI) system and validate with literature data. Design/methodology/approach The first part of the paper discusses the approach followed for numerical...

... ) − 2 3 µ ∂ v n ∂ x n δ i j − P δ i j (5) q j = Γ Φ ( ∂ Φ ∂ x j ) These equations are solved in a pressure-based algorithm by the PISO algorithm. The turbulence model used in this simulation is the LES model (Smagorinsky, 1963...

... predictions are compared to those obtained in this particular test case with the more sophisticated hybrid RANS–large eddy simulation (LES) approach, in particular with the Spalart–Allmaras–delayed detached eddy simulation model. Results are indeed closer to experimental data. Originality/value However...