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

Maja Wänström; William K. George; Knud Erik Meyer

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

Maja Wänström, William K. George, Knud Erik Meyer

Department of Mechanical Engineering

Research output: Contribution to conference › Conference abstract for conference › Research › peer-review

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 language	English
Publication date	2005
Publication status	Published - 2005
Event	58th Annual Meeting of the APS Division of Fluid Dynamics - Hilton Chicago Hotel, Chicago, United States Duration: 20 Nov 2005 → 22 Nov 2005 Conference number: 58

Conference

Conference	58th Annual Meeting of the APS Division of Fluid Dynamics
Number	58
Location	Hilton Chicago Hotel
Country	United States
City	Chicago
Period	20/11/2005 → 22/11/2005

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title = "POD applied to stereo PIV data of the far turbulent axisymmetric jet",

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.",

author = "Maja W{\"a}nstr{\"o}m and George, {William K.} and Meyer, {Knud Erik}",

year = "2005",

language = "English",

note = "58th Annual Meeting of the APS Division of Fluid Dynamics, APS DFD05 ; Conference date: 20-11-2005 Through 22-11-2005",

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TY - ABST

T1 - POD applied to stereo PIV data of the far turbulent axisymmetric jet

AU - Wänström, Maja

AU - George, William K.

AU - Meyer, Knud Erik

N1 - Conference code: 58

PY - 2005

Y1 - 2005

N2 - 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.

AB - 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.

M3 - Conference abstract for conference

T2 - 58th Annual Meeting of the APS Division of Fluid Dynamics

Y2 - 20 November 2005 through 22 November 2005

ER -