A comparative study of URANS, DDES and DES simulations of Jetstream 31 aircraft near the compressibility limit

This work presents a comparative study of Unsteady Reynolds–Averaged Navier–Stokes (URANS), Detached Eddy Simulations (DES) and Delayed (DDES) turbulence modeling approaches by performing numerical investigation with the ANSYS-FLUENT software package on full-scale model Jetstream 31 aircraft. The lift drag coefficients obtained from different models are compared flight test data, wind tunnel data theoretical estimates. also each other basis pressure coefficient distributions velocity fluctuations along various lines sections For mesh conditions presented in this study, DDES Spalart–Allmaras gives best overall results.