# Temporally optimized spanwise vorticity sensor measurements in turbulent boundary layers

Temporally optimized spanwise vorticity sensor measurements in turbulent boundary layers Multi-element hot-wire anemometry was used to measure spanwise vorticity fluctuations in turbulent boundary layers. Smooth wall boundary layer profiles, with very good spatial and temporal resolution, were acquired over a Kármán number range of 2000–12,700 at the Melbourne Wind Tunnel at the University of Melbourne and the University of New Hampshire’s Flow Physics Facility. A custom hot-wire probe was necessary to simultaneously obtain velocity and spanwise vorticity measurements centered at a fixed point in space. A custom calibration/processing scheme was developed to utilize single-wall-parallel wires to optimize the accuracy of the measured wall-normal velocity fluctuations derived from the sensor’s $$\times$$ × -array. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Experiments in Fluids Springer Journals

# Temporally optimized spanwise vorticity sensor measurements in turbulent boundary layers

, Volume 56 (12) – Nov 28, 2015
14 pages

/lp/springer_journal/temporally-optimized-spanwise-vorticity-sensor-measurements-in-QMaG4u6DNk
Publisher
Springer Berlin Heidelberg
Subject
Engineering; Engineering Fluid Dynamics; Fluid- and Aerodynamics; Engineering Thermodynamics, Heat and Mass Transfer
ISSN
0723-4864
eISSN
1432-1114
D.O.I.
10.1007/s00348-015-2084-6
Publisher site
See Article on Publisher Site

### Abstract

Multi-element hot-wire anemometry was used to measure spanwise vorticity fluctuations in turbulent boundary layers. Smooth wall boundary layer profiles, with very good spatial and temporal resolution, were acquired over a Kármán number range of 2000–12,700 at the Melbourne Wind Tunnel at the University of Melbourne and the University of New Hampshire’s Flow Physics Facility. A custom hot-wire probe was necessary to simultaneously obtain velocity and spanwise vorticity measurements centered at a fixed point in space. A custom calibration/processing scheme was developed to utilize single-wall-parallel wires to optimize the accuracy of the measured wall-normal velocity fluctuations derived from the sensor’s $$\times$$ × -array.

### Journal

Experiments in FluidsSpringer Journals

Published: Nov 28, 2015

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