POD applied to stereo PIV data of the far turbulent axisymmetric jet

Maja Wänström, William K. George, Knud Erik Meyer

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Abstract

An experiment was performed to evaluate spatial resolution requirements for multiple and single component POD applications to cross-sections of the far axisymmetic jet. The jet of Gamard et al. was used at an exit Reynolds number of 20,000. Three-component velocity data were obtained at downstream positions of 60, 70 and 100 diameters using stereoscopic PIV. In addition to the standard PIV processing, a novel application of the snapshot POD was used to filter the data in preparation for the classical POD analysis. The two-point Reynolds stress tensor was reconstructed from the dominant snapshot POD-modes, and the convex hull of this data set was extended using symmetry conditions. The results are believed to be relevant to not only understanding previous experiments with hot-wires, but also DNS and LES.
Original languageEnglish
Publication date2005
Publication statusPublished - 2005
Event58th Annual Meeting of the APS Division of Fluid Dynamics - Hilton Chicago Hotel, Chicago, United States
Duration: 20 Nov 200522 Nov 2005
Conference number: 58

Conference

Conference58th Annual Meeting of the APS Division of Fluid Dynamics
Number58
LocationHilton Chicago Hotel
Country/TerritoryUnited States
CityChicago
Period20/11/200522/11/2005

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