Numerical study of high-speed turbulent jets in crossflow

Large-eddy Simulation (LES) is used to study (i) a sonic jet injected into a supersonic crossflow, and (ii) a supersonic jet injected into a subsonic crossflow, whose conditions are based on experiments by Santiago {\it et al.} (1997) and Beresh {\it et al.} (2005) respectively. An unstructured, finite volume compressible solver (Park \& Mahesh 2007) along with the Dynamic Smagorinsky Model (DSM) (Moin {\it et al.} 1991) is used in the simulations. Qualitative and quantitative comparison with experiment show good agreement for both flows. Dynamic Mode Decomposition (DMD) of the three-dimensional flow field is performed to identify dominant frequencies and their corresponding flow features.