AN EVALUATION OF THE SPALART-ALLMARAS TURBULENCE MODEL FOR THE SIMULATION OF THE BASE BLEED EFFECT

摘要

This study presents results of numerical simulations with the research code named CARBUR (MHEQ team, IUSTI laboratory, Marseilles, France) in order to evaluate the Spalart-Allmaras model, recently added in the code, on base bleed configuration where a heavy-detached base flow interacts with an additional axial injection. After a preliminary study of the blunt base test case (without injection) [1] which shows a relatively good agreement with experiments, and a quasi-similarity with other previous numerical studies, the highly detailed base bleed test case of Illinois [2,3,4,5] is simulated. Even if quantitatively, differences on base pressure levels are observed, the qualitative description of the flow is improved in comparison with previous laminar computations [6].