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Development of laser-optical measurement techniques on the vortex tube: Taking PIV to its limits

Burow, Eike Jens and Doll, Ulrich and Klinner, Joachim and Stockhausen, Guido and Willert, Christian (2016) Development of laser-optical measurement techniques on the vortex tube: Taking PIV to its limits. 18th International Symposium on the Application of Laser and Imaging Techniques to Fluid Mechanics, Lisbon.

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Official URL: http://ltces.dem.ist.utl.pt/lxlaser/lxlaser2016/

Abstract

The Ranque-Hilsch vortex tube (RHVT) is referred to as one of the unsolved problems in physics: consisting of a cylindrical tube with several tangential inlet nozzles only, the expanded gas forms a complex internal flow field, resulting in a unique temperature separation effect. Since the vortex tube’s invention by Ranque (1933) and Hilsch (1947) it has been used for decentralized cooling and gas cleaning purposes. While so far it has been investigated by means of conventional probes as well as laser-optical techniques such as FRS, L2F and LDA, this contribution targets on planar two-component PIV measurements. While the usual configuration features one outlet on each end of the tube, it will be shown that the major internal flow phenomena occur in a similar manner on a uni-flow configuration with only one outlet opposite to the inlet. The focus however is not on the temperature separation. Instead the RHVT is introduced as a development platform for laser-optical methods: it will be shown that the RHVT’s complex flow topology is pushing the PIV technique to its limits; challenges and possible solutions are discussed. Especially the high tangential velocity component results in a strong projection error in the observed axial and radial velocities: to address this issue stereoscopic PIV will be deployed for the purpose of mapping the RHVT.

Item URL in elib:https://elib.dlr.de/113896/
Document Type:Conference or Workshop Item (Speech)
Title:Development of laser-optical measurement techniques on the vortex tube: Taking PIV to its limits
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Burow, Eike JensEike.Burow (at) dlr.deUNSPECIFIED
Doll, UlrichUlrich.Doll (at) dlr.deUNSPECIFIED
Klinner, Joachimjoachim.klinner (at) dlr.deUNSPECIFIED
Stockhausen, GuidoUNSPECIFIEDUNSPECIFIED
Willert, ChristianChris.Willert (at) dlr.dehttps://orcid.org/0000-0002-1668-0181
Date:4 July 2016
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:PIV, vortex tube, reference experiment, development platform
Event Title:18th International Symposium on the Application of Laser and Imaging Techniques to Fluid Mechanics
Event Location:Lisbon
Event Type:international Conference
HGF - Research field:Energy
HGF - Program:Energy Efficiency, Materials and Resources
HGF - Program Themes:Efficient and Flexible Power Plants
DLR - Research area:Energy
DLR - Program:E VS - Combustion Systems
DLR - Research theme (Project):E - Gas Turbine, L - Laser Research and Technology
Location: Köln-Porz
Institutes and Institutions:Institute of Propulsion Technology > Engine Measurement Systems
Deposited By: Burow, Eike Jens
Deposited On:18 Sep 2017 11:20
Last Modified:31 Jul 2019 20:11

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