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Spectral dynamic of pulsating turbulent pipe flow
Computers & Fluids, 2008zbMATH Open Web Interface contents unavailable due to conflicting licenses.
MANNA, MARCELLO, Vacca, A.
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Optimal Spectral Base‐Flow Estimation
Journal of Hydraulic Engineering, 1990This paper presents an off-line method to estimate, on a yearly basis, daily sequences of base flow in perennial and effluent rivers, based exclusively on daily discharge measurements. The technique resorts to linear systems theory for the identification of the frequency (or spectral) response function as an attenuated and lagged ideal low-pass filter ...
Jaime Collado +2 more
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Spectral analysis of nonlinear flows
Journal of Fluid Mechanics, 2009We present a technique for describing the global behaviour of complex nonlinear flows by decomposing the flow into modes determined from spectral analysis of the Koopman operator, an infinite-dimensional linear operator associated with the full nonlinear system. These modes, referred to as Koopman modes, are associated with a particular observable, and
Rowley, Clarence W. +4 more
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v21 — Dynamic -Evolution (Spectral Flow)
We evolve the kernel via dK/dτ = G − K with Frobenius normalization at each step, and trackthe top-k eigenvalues along τ ∈ [0, 1] using steps of ∆τ .openaire +1 more source
Uncertainty quantification in reacting-flow simulations through non-intrusive spectral projection
Combustion and Flame, 2003Matthew T Reagan +2 more
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