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Accepting a Challenge - The Development of PIV for Application in pressurized cryogenic Wind Tunnels

Quest, Jürgen and Konrath, Robert (2011) Accepting a Challenge - The Development of PIV for Application in pressurized cryogenic Wind Tunnels. 41st AIAA Fluid Dynamics Conference and Exhibit, 27. - 30. Jun. 2011, Honolulu, Hawaii, USA.

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Official URL: http://www.aiaa.com


The development and application of a Stereo-PIV system in the cryogenic transonic wind tunnel ETW enabling detailed flow field analyses on scaled models of transport aircraft at flight Mach- and Reynolds numbers is described. The specific conditions in such wind tunnels as cryogenic gas temperatures down to 110 K and moderate gas pressures of up to 450kPa as well as a large plenum encapsulating the test section made specific developments necessary. This comprises the generation of suitable flow tracers for cryogenic flows considering the specific requirements for an application in the ETW as well as the supply of laser light of high pulse energy and optical components to be placed within the cryogenic environment. Optical effects due to gas density changes within the wind tunnel plenum and light beam deflections or shifts are considered in the optical design of the CRYO-PIV system. Following trials in the cryogenic research tunnel PETW the applicability of the developed system is successfully demonstrated in the ETW during two test campaigns for a full scale and a half- model of a transport aircraft. The employed Stereo-PIV system and first results of the measurements are discussed. Scheduled next steps for improvements based on the gained experiences are outlined.

Item URL in elib:https://elib.dlr.de/71145/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:Accepting a Challenge - The Development of PIV for Application in pressurized cryogenic Wind Tunnels
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Series Name:Conference Proceedings Online
Keywords:CRYO-PIV system, ETW, Particle Image Velocimetry (PIV), Stereo-PIV, cryogenic transonic wind tunnel
Event Title:41st AIAA Fluid Dynamics Conference and Exhibit
Event Location:Honolulu, Hawaii, USA
Event Type:international Conference
Event Dates:27. - 30. Jun. 2011
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:17 Jan 2012 12:18
Last Modified:17 Jan 2012 12:18

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