We have succeeded in measuring a substantial portion of the two-point space-time velocity correlation in hot, highspeed turbulent jets. This measurement, crucial in aeroacoustic theory and the prediction of jet noise, has been sought for a long time, but has not been made due to the limitations of anemometry. Particle Image Velocimetry has reached a stage of maturity where sufficient measuremen...

Two related open problems in the theory of 3D Navier-Stokes turbulence are discussed in this paper. The first is the phenomenon of intermittency in the dissipation field. Dissipation-range intermittency was first discovered experimentally by Batchelor and Townsend over fifty years ago. It is characterized by spatio-temporal binary behaviour in which long, quiescent periods in the velocity signa...

Introduction: In vitro hydrodynamic characterization of prosthetic heart valves provides important information regarding their operation, especially if performed by noninvasive techniques of anemometry. Once velocity profiles for each valve are provided, it is possible to compare them in terms of hydrodynamic performance. In this first experimental study using laser doppler anemometry with mech...

This is the first part of a two-part paper focusing on assessment accuracy turbulence-related data from computational fluid dynamics (CFD) simulations using effective numerical dissipation rate and viscosity. Setup CFD cases replicating swirling pipe flow experiment literature, for which measured via laser Doppler anemometry (LDA) had been reported, presented. The way viscosity were obtained ea...