28 citations · 145 across the 16 of their papers we have counts for
8 papers · 1 filter
Experimental investigation of the turbulent cascade development by injection of single large-scale Fourier modes
Margherita Dotti, Rasmus Korslund Schlander, Preben Buchhave +1
The current work presents an experimental investigation of the dynamic interactions between flow scales caused by repeated actions of the nonlinear term of the Navier-Stokes equati…
Measurement of turbulent spatial structure and kinetic energy spectrum by exact temporal-to-spatial mapping
Preben Buchhave, Clara M. Velte
We present a method for converting a time record of turbulent velocity measured at a point in a flow to a spatial velocity record consisting of consecutive convection elements. The…
Reduction of noise and bias in randomly sampled power spectra
Preben Buchhave, Clara M. Velte
We consider the origin of noise and distortions in power spectral estimates of randomly sampled data, specifically velocity data measured with a burst-mode laser Doppler anemometer…
The effect of dead time on randomly sampled power spectral estimates
Preben Buchhave, Clara M. Velte, William K. George
We investigate power spectra of a randomly sampled stationary stochastic signal, e.g. a spatial component of a turbulent velocity. We extend the methods of previous authors that ba…
Dead time effects in laser Doppler anemometry measurements
Clara M. Velte, Preben Buchhave, William K. George
We present velocity power spectra computed by the so-called direct method from burst type laser Doppler anemometer (LDA) data, both measured in a turbulent round jet and generated…
Estimation of burst-mode LDA power spectra
Clara M. Velte, William K. George, Preben Buchhave
The estimation of power spectra from LDA data provides signal processing challenges for fluid dynamicists for several reasons: acquisition is dictated by randomly arriving particle…
Dynamic Triad Interactions and Evolving Turbulence -- Part 1: 4D Modal Interactions
Preben Buchhave, Clara M. Velte
We investigate the effect of a four-dimensional Fourier transform on the formulation of the Navier-Stokes equation in Fourier space and the way the energy is transferred between Fo…
A novel laser Doppler anemometer (LDA) for high-accuracy turbulence measurements
Mohd Rusdy Yaacob, Rasmus Korslund Schlander, Preben Buchhave +1
High accuracy and dynamic range have been some of the most prominent challenges when it comes to fine-scale turbulence measurements. The current commercial LDA processors, which pe…