Fully resolved measurements of turbulent boundary layer flows up to

Fully resolved measurements of turbulent boundary layers are reported for the Reynolds number range Re_{\unicode[STIX]{x1D70F}}=6000{-}20\,000. Despite several decades of research in wall-bounded turbulence there is still controversy over the behaviour of streamwise turbulence intensities near the wall, especially at high Reynolds numbers. Much of it stems from the uncertainty in measurement due to finite spatial resolution. Conventional...