A spatial resolution correction scheme for disturbance profiles in developing zero-pressure-gradient turbulent boundary layers

• DOI: 10.1615/thmt-23.130
• Publication Date: 2024-02-14T15:00:08Z
• Authors: F. Gokhan Ergin; F. L. Zafiryadis; B. B. Watz; Knud Erik Meyer
• Keywords: Dimensionless quantity; Constant (computer programming); Pressure gradient; Intensity

Constant temperature anemometry (CTA) is still the preferred method in measurement of key quantities turbulence investigations. One main challenges CTA finite length sensor often being larger than smallest eddies present flow, which leads to spatial averaging along sensor. The effect an under-estimated fluctuation intensity value, biased estimation heat- and mass- transfer characteristics flow value needs be corrected. There have been numerous correction schemes that aim estimate "true" turbulent value. Here we get inspiration from scheme proposed by Smits (1) partly follow original scheme, a better fit our experimental data obtained over developing zero-pressure-gradient (ZPG) boundary layers (TBL), with Rex values ranging 0.2 million 1.33 million, Reτ 526 1230. results indicate are function both dimensionless length, L+ friction Reynolds number, Reτ. Other parameters were also investigated whether they too change and/or Reτ, within ZPG TBL. It was observed logarithmic region; von Karman constant, κ additive B, weak dependence on L+.