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Spectral analysis of jet turbulence
Oliver T. Schmidt, Aaron Towne, Georgios Rigas +2
Informed by LES data and resolvent analysis of the mean flow, we examine the structure of turbulence in jets in the subsonic, transonic, and supersonic regimes. Spectral (frequency…
An efficient streaming algorithm for spectral proper orthogonal decomposition
Oliver T. Schmidt, Aaron Towne
A streaming algorithm to compute the spectral proper orthogonal decomposition (SPOD) of stationary random processes is presented. As new data becomes available, an incremental upda…
Jet-edge interaction tones
Peter Jordan, Vincent Jaunet, Aaron Towne +4
Motivated by the problem of jet-flap interaction noise, we study the tonal dynamics that occur when a sharp edge is placed in the hydrodynamic nearfield of an isothermal turbulent…
Spectral proper orthogonal decomposition and its relationship to dynamic mode decomposition and resolvent analysis
Aaron Towne, Oliver T. Schmidt, Tim Colonius
We consider the frequency domain form of proper orthogonal decomposition (POD) called spectral proper orthogonal decomposition (SPOD). Spectral POD is derived from a space-time POD…