3 citations · 3 across the 1 of their papers we have counts for
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A stochastic SPOD-Galerkin model for broadband turbulent flows
Tianyi Chu, Oliver T. Schmidt
The use of spectral proper orthogonal decomposition (SPOD) to construct low-order models for broadband turbulent flows is explored. The choice of SPOD modes as basis vectors is mot…
Frequency-time analysis, low-rank reconstruction and denoising of turbulent flows using SPOD
Akhil Nekkanti, Oliver T. Schmidt
Four different applications of spectral proper orthogonal decomposition (SPOD): low-rank reconstruction, denoising, frequency-time analysis, and prewhitening are demonstrated on la…
Spectral POD analysis of the turbulent wake of a disk at Re = 50, 000
Sheel Nidhan, Karu Chongsiripinyo, Oliver T. Schmidt +1
The coherent structures in the turbulent wake of a disk at a moderately high Reynolds number ($\Rey$) of are examined using spectral proper orthogonal decomposition (SPOD)…
Bispectral mode decomposition of nonlinear flows
Oliver T. Schmidt
Triadic interactions are the fundamental mechanism of energy transfer in fluid flows. This work introduces bispectral mode decomposition as a direct means of educing flow structure…
Lift-up, Kelvin-Helmholtz and Orr mechanisms in turbulent jets
Ethan Pickering, Georgios Rigas, Petrônio A. S. Nogueira +3
Three amplification mechanisms present in turbulent jets, namely lift-up, Kelvin-Helmholtz, and Orr, are characterized via global resolvent analysis and spectral proper orthogonal…
A conditional space-time POD formalism for intermittent and rare events: example of acoustic bursts in turbulent jets
Oliver T. Schmidt, Peter J. Schmid
We present a conditional space-time proper orthogonal decomposition (POD) formulation that is tailored to the eduction of the average, rare or intermittent event from an ensemble o…