Identifying sources of stereoscopic PIV measurements errors on turbulent round jets

Maja Wanstrom; Knud Erik Meyer; William K. George; Carsten Westergaard

doi:10.1115/FEDSM2007-37256

Identifying sources of stereoscopic PIV measurements errors on turbulent round jets

Maja Wanstrom
, Knud Erik Meyer
, William K. George
, Carsten Westergaard

Department of Mechanical and Aerospace Engineering

Chalmers University of Technology
Technical University of Denmark
FORCE Technology

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

3 Scopus citations

Abstract

This paper addresses some hurdles in experimental data acquisition and analysis when sampling an axisymmetric flow in Cartesian coordinates. The problems are illustrated using recent SPIV data taken in the far field of a turbulent round jet in air. Discrepancies became apparent when trying to reconstruct the polar coordinate moments from Cartesian ones, since both components of the in-plane moments of the latter must be measured to within the same relative accuracy in order to recover the axisymmetry. Various sources for the observed discrepancies are considered including differential resolution of the Cartesian components, peak-locking and misregistration in the stereoscopic recombination. The last seems to be the most important one.

Original language	English
Title of host publication	2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007
Pages	987-996
Number of pages	10
Edition	PART A
DOIs	https://doi.org/10.1115/FEDSM2007-37256
State	Published - 2007
Event	2007 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007 - San Diego, CA, United States Duration: Jul 30 2007 → Aug 2 2007

Publication series

Name	2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007
Number	PART A
Volume	1 SYMPOSIA

Conference

Conference	2007 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007
Country/Territory	United States
City	San Diego, CA
Period	07/30/07 → 08/2/07

Access to Document

10.1115/FEDSM2007-37256

Cite this

Wanstrom, M., Meyer, K. E., George, W. K., & Westergaard, C. (2007). Identifying sources of stereoscopic PIV measurements errors on turbulent round jets. In 2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007 (PART A ed., pp. 987-996). (2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007; Vol. 1 SYMPOSIA, No. PART A). https://doi.org/10.1115/FEDSM2007-37256

Wanstrom, Maja ; Meyer, Knud Erik ; George, William K. et al. / Identifying sources of stereoscopic PIV measurements errors on turbulent round jets. 2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007. PART A. ed. 2007. pp. 987-996 (2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007; PART A).

@inproceedings{9efa3d7e583649bcb5a2b78473fc97f0,

title = "Identifying sources of stereoscopic PIV measurements errors on turbulent round jets",

abstract = "This paper addresses some hurdles in experimental data acquisition and analysis when sampling an axisymmetric flow in Cartesian coordinates. The problems are illustrated using recent SPIV data taken in the far field of a turbulent round jet in air. Discrepancies became apparent when trying to reconstruct the polar coordinate moments from Cartesian ones, since both components of the in-plane moments of the latter must be measured to within the same relative accuracy in order to recover the axisymmetry. Various sources for the observed discrepancies are considered including differential resolution of the Cartesian components, peak-locking and misregistration in the stereoscopic recombination. The last seems to be the most important one.",

author = "Maja Wanstrom and Meyer, \{Knud Erik\} and George, \{William K.\} and Carsten Westergaard",

year = "2007",

doi = "10.1115/FEDSM2007-37256",

language = "English",

isbn = "0791842886",

series = "2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007",

number = "PART A",

pages = "987--996",

booktitle = "2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007",

edition = "PART A",

note = "2007 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007 ; Conference date: 30-07-2007 Through 02-08-2007",

}

Wanstrom, M, Meyer, KE, George, WK & Westergaard, C 2007, Identifying sources of stereoscopic PIV measurements errors on turbulent round jets. in 2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007. PART A edn, 2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007, no. PART A, vol. 1 SYMPOSIA, pp. 987-996, 2007 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007, San Diego, CA, United States, 07/30/07. https://doi.org/10.1115/FEDSM2007-37256

Identifying sources of stereoscopic PIV measurements errors on turbulent round jets. / Wanstrom, Maja; Meyer, Knud Erik; George, William K. et al.
2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007. PART A. ed. 2007. p. 987-996 (2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007; Vol. 1 SYMPOSIA, No. PART A).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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N2 - This paper addresses some hurdles in experimental data acquisition and analysis when sampling an axisymmetric flow in Cartesian coordinates. The problems are illustrated using recent SPIV data taken in the far field of a turbulent round jet in air. Discrepancies became apparent when trying to reconstruct the polar coordinate moments from Cartesian ones, since both components of the in-plane moments of the latter must be measured to within the same relative accuracy in order to recover the axisymmetry. Various sources for the observed discrepancies are considered including differential resolution of the Cartesian components, peak-locking and misregistration in the stereoscopic recombination. The last seems to be the most important one.

AB - This paper addresses some hurdles in experimental data acquisition and analysis when sampling an axisymmetric flow in Cartesian coordinates. The problems are illustrated using recent SPIV data taken in the far field of a turbulent round jet in air. Discrepancies became apparent when trying to reconstruct the polar coordinate moments from Cartesian ones, since both components of the in-plane moments of the latter must be measured to within the same relative accuracy in order to recover the axisymmetry. Various sources for the observed discrepancies are considered including differential resolution of the Cartesian components, peak-locking and misregistration in the stereoscopic recombination. The last seems to be the most important one.

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M3 - Conference contribution

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Wanstrom M, Meyer KE, George WK, Westergaard C. Identifying sources of stereoscopic PIV measurements errors on turbulent round jets. In 2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007. PART A ed. 2007. p. 987-996. (2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007; PART A). doi: 10.1115/FEDSM2007-37256

Identifying sources of stereoscopic PIV measurements errors on turbulent round jets

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