caa a22 4500 606198814 CHVBK 20210128100935.0 cr unu---uuuuu 210128e20150201xx s 000 0 eng 10.1007/s00348-015-1897-7 doi (NATIONALLICENCE)springer-10.1007/s00348-015-1897-7 Spatial correlation of measured unsteady surface pressure behind a backward-facing step [Elektronische Daten] [Michael Bilka, Mark Paluta, Jonathan Silver, Scott Morris] The spatial correlations of the unsteady surface pressure for a backward-facing step were studied experimentally. The measurements were acquired using an array of surface pressure sensors within an anechoic wind tunnel which was designed to minimize acoustic contamination. The maximum Reynolds number based on the step height was 59,200. The spatial characteristics of the surface pressure were studied in two parts. First, a linear array of microphones oriented in the streamwise direction was used to obtain the evolution of the pressure spectra, length scale, and phase speed. Second, an array oriented in the spanwise direction was used to provide the coherence and integral length scales in that direction. The correlation length functions were found to vary with downstream location in the separated region behind the step. After reattachment, the integral scales of the surface pressure continued to increase in magnitude as far as 18 step heights downstream of the step. Springer-Verlag Berlin Heidelberg, 2015 Bilka Michael Department of Aerospace and Mechanical Engineering, University of Nortre Dame, 46545, Notre Dame, IN, USA aut Paluta Mark Department of Aerospace and Mechanical Engineering, University of Nortre Dame, 46545, Notre Dame, IN, USA aut Silver Jonathan Department of Aerospace and Mechanical Engineering, University of Nortre Dame, 46545, Notre Dame, IN, USA aut Morris Scott Department of Aerospace and Mechanical Engineering, University of Nortre Dame, 46545, Notre Dame, IN, USA aut Experiments in Fluids Springer Berlin Heidelberg 56/2(2015-02-01), 1-12 0723-4864 56:2<1 2015 56 348 https://doi.org/10.1007/s00348-015-1897-7 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/s00348-015-1897-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Bilka Michael Department of Aerospace and Mechanical Engineering, University of Nortre Dame, 46545, Notre Dame, IN, USA aut NATIONALLICENCE 700 1- Paluta Mark Department of Aerospace and Mechanical Engineering, University of Nortre Dame, 46545, Notre Dame, IN, USA aut NATIONALLICENCE 700 1- Silver Jonathan Department of Aerospace and Mechanical Engineering, University of Nortre Dame, 46545, Notre Dame, IN, USA aut NATIONALLICENCE 700 1- Morris Scott Department of Aerospace and Mechanical Engineering, University of Nortre Dame, 46545, Notre Dame, IN, USA aut NATIONALLICENCE 773 0- Experiments in Fluids Springer Berlin Heidelberg 56/2(2015-02-01), 1-12 0723-4864 56:2<1 2015 56 348