caa a22 4500 606196927 CHVBK 20210128100927.0 cr unu---uuuuu 210128e20150101xx s 000 0 eng 10.1007/s00348-014-1880-8 doi (NATIONALLICENCE)springer-10.1007/s00348-014-1880-8 Sensor-based estimation of the velocity in the wake of a low-aspect-ratio pyramid [Elektronische Daten] [Zahra Hosseini, Robert Martinuzzi, Bernd Noack] We perform a sensor-based velocity field estimation in the wake of a wall-mounted pyramid from experimental data. The velocity field is measured with time-resolved stereoscopic PIV, and the sensors monitor local surface pressure. Starting point is the extended proper orthogonal decomposition technique. Key enablers for the spatio-temporal resolution of the strongly modulated shedding are (1) the exploitation of cross-correlation between velocity field and pressure, (2) time-delayed sensor signals, (3) symmetry considerations and (4) guaranteed orthonormality of the velocity expansion modes. The combined filtering operations are shown to yield a near-optimal flow estimation from pressure signals. The residual of the estimated coherent kinetic energy is about 30-50% smaller, and the mean-field paraboloid is better rendered than with the previously proposed estimation methods. Springer-Verlag Berlin Heidelberg, 2015 Hosseini Zahra Department of Mechanical and Manufacturing Engineering, Schulich School of Engineering, University of Calgary, Calgary, Canada aut Martinuzzi Robert Department of Mechanical and Manufacturing Engineering, Schulich School of Engineering, University of Calgary, Calgary, Canada aut Noack Bernd Institut PPRIME, CNRS - Université de Poitiers - ENSMA, UPR 3346, Département Fluides, Thermique, Combustion, CEAT, 43 rue de l'Aérodrome, 86036, Poitiers Cedex, France aut Experiments in Fluids Springer Berlin Heidelberg 56/1(2015-01-01), 1-16 0723-4864 56:1<1 2015 56 348 https://doi.org/10.1007/s00348-014-1880-8 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00348-014-1880-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hosseini Zahra Department of Mechanical and Manufacturing Engineering, Schulich School of Engineering, University of Calgary, Calgary, Canada aut NATIONALLICENCE 700 1- Martinuzzi Robert Department of Mechanical and Manufacturing Engineering, Schulich School of Engineering, University of Calgary, Calgary, Canada aut NATIONALLICENCE 700 1- Noack Bernd Institut PPRIME, CNRS - Université de Poitiers - ENSMA, UPR 3346, Département Fluides, Thermique, Combustion, CEAT, 43 rue de l'Aérodrome, 86036, Poitiers Cedex, France aut NATIONALLICENCE 773 0- Experiments in Fluids Springer Berlin Heidelberg 56/1(2015-01-01), 1-16 0723-4864 56:1<1 2015 56 348