Large-eddy simulation of nitrogen injection at trans- and supercritical conditions

摘要: Large-eddy simulations (LESs) of cryogenic nitrogen injection into a warm environment at supercritical pressure are performed and real-gas thermodynamics models and subgrid-scale (SGS) turbulence models are evaluated. The comparison of different SGS models—the Smagorinsky model, the Vreman model, and the adaptive local deconvolution method—shows that the representation of turbulence on the resolved scales has a notable effect on the location of jet break-up, whereas the particular modeling of unresolved scales is less …