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Evaluation of PISFV Method in Subsonic Wind Tunnel

Mosharov, Vladimir and Radchenko, Vladimir and Klein, Christian and Henne, Ulrich and Kirmse, Tania (2011) Evaluation of PISFV Method in Subsonic Wind Tunnel. 11th International Conference on Fluid Control, Measurements and Visualization, FLUCOME 2011, 05. - 09. Dec. 2011, Keelung, Taiwan.

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Official URL: http://flucome2011.ntou.edu.tw/


Particle image surface flow visualization (PISFV) method was proposed recently. The idea of the method is to measure some small shift of an oil film applied on the investigated object surface and to restore the complete pattern of surface flow numerically. Optically contrast (luminescent) hard particles are added to the oil film and at least two images of the particledistribution on the model surface are acquired at some time interval in the flow by a CCD camera. Processing of such images using cross-correlation analysis (similarly to PIV method) provides the determination of particle displacement vectors. Possible model shift on the images should be subtracted from particle displacement to obtain oil shift vectors. The direction of oil shift coincides with the direction of the surface streamlines. That allows to reconstruct these streamlines. The shear stress field can be calculated from oil shift magnitude if oil film thickness is known. Even the small oil shift for a few pixels of image is sufficient for surface flow visualization. Oil redistribution on investigated surface is insignificant and several flow regimes can be studied using one oil film application.

Item URL in elib:https://elib.dlr.de/69842/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:Evaluation of PISFV Method in Subsonic Wind Tunnel
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Mosharov, VladimirTsAGI Zhukovsky, RussiaUNSPECIFIED
Radchenko, VladimirTsAGI, Zhukovsky, RussiaUNSPECIFIED
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Page Range:pp. 1-4
Series Name:Conference Proceedings
Keywords:surface flow visualization, surface streamlines, shear stress, oil-flow pattern, cross correlation analysis
Event Title:11th International Conference on Fluid Control, Measurements and Visualization, FLUCOME 2011
Event Location:Keelung, Taiwan
Event Type:international Conference
Event Dates:05. - 09. Dec. 2011
Organizer:National Taiwan Ocean University
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research (old)
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Flight Physics (old)
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Experimental Methods
Deposited By: Micknaus, Ilka
Deposited On:04 Jan 2012 11:14
Last Modified:04 Jan 2012 11:34

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