Performance of a three-component vorticity probe in a turbulent far-wake

Performance of a three-component vorticity probe in a turbulent far-wake   A new four X-wire vorticity probe has been developed to measure all three components of the vorticity fluctuation vector simultaneously. The performance of this probe is tested in a turbulent far-wake. The measured Reynolds stresses agree with those obtained previously from simpler hot wire configurations. The variances of the lateral vorticity components agree within ±15% with those measured with a one-component vorticity probe. The variances of the streamwise vorticity component are also in reasonable agreement with those inferred from two X-wires. At high wavenumbers, the measured vorticity spectra agree with those obtained by direct numerical simulation (DNS) in the central region of a turbulent channel flow. The comparison of measured high-order moments of vorticity on the wake centerline with local isotropy also suggests the probe performs satisfactorily. Experiments in Fluids Springer Journals

Performance of a three-component vorticity probe in a turbulent far-wake

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Copyright © 1999 by Springer-Verlag Berlin Heidelberg
Engineering; Engineering Fluid Dynamics; Fluid- and Aerodynamics; Engineering Thermodynamics, Heat and Mass Transfer
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