Spatial and temporal resolution of a fast-response aerodynamic pressure probe in grid-generated turbulence

Abstract The spatial and temporal resolution of a fast-response aerodynamic pressure probe (FRAP) is investigated in benchmark flow grid-generated turbulence. A grid with mesh size $$M=6.4$$ M = 6.4 mm tested for two different free-stream velocities, hence, resulting Reynolds numbers $$Re_M= \{4300,12800\}$$ R e { 4300 , 12800 } . thorough analysis the applicability underlying assumptions regard to turbulence isotropy homogeneity carried out. Taylor’s frozen hypothesis assumed calculation deducible quantities, like turbulent kinetic energy or dissipation rate. Furthermore, besides examination statistical velocity spectra measurements downstream are quantified. Results small five-hole equipped piezo-resistive differential sensors compared single-wire hot-wire constant temperature anemometry data wire lengths. Estimates scales (e.g., Taylor micro scale Kolmogorov length scale) show good agreement literature but affected by filtering effects. Especially spectra, very high bandwidth content cannot be resolved FRAP, which mainly due limits calibration FRAP minimal integrated sensors. Graphic abstract