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Hot-wire measurements in a Direct Driven high speed Turbo Fan (DDTF) rig

Meyer, Robert and Knobloch, Karsten and Hakansson, Sebastian (2015) Hot-wire measurements in a Direct Driven high speed Turbo Fan (DDTF) rig. In: Conferenz Proceedings No. 234. 11th European Conference on Turbomachinery (ETC-11), 23-27.3.2015, Madrid.

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Official URL: http://www.etc11.eu/


The German Aerospace Center (DLR) has measured and analyzed the unsteady flow field of a representative Direct Driven Turbo Fan (DDTF) stage by using hot-wire anemometry. Measurements were conducted together with the partner Rolls-Royce at the fan test bed of AneCom AeroTest. The averaged mean vectors as well as the fluctuating components of the velocity in the wake of each individual rotor blade were determined and the local turbulence distribution was calculated for various axial and radial positions downstream of the rotor. The calculated local turbulence distribution of the flow downstream of the rotating blades shows an increase of the turbulence intensity from 4.5% up to 12 % in the wake depending on the operating point. The variation of the axial position downstream of the rotor describes the mixing process of the rotor blade wakes. With increasing distance from the trailing edge of the rotor the turbulence intensities levels are getting more equalized.

Item URL in elib:https://elib.dlr.de/102018/
Document Type:Conference or Workshop Item (Speech)
Title:Hot-wire measurements in a Direct Driven high speed Turbo Fan (DDTF) rig
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Meyer, Robertrobert.meyer (at) dlr.deUNSPECIFIED
Knobloch, Karstenkarsten.knobloch (at) dlr.deUNSPECIFIED
Hakansson, Sebastiansebastian.hakansson (at) dlr.deUNSPECIFIED
Date:March 2015
Journal or Publication Title:Conferenz Proceedings No. 234
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:hot-wire, Hitzdraht, Verdichter, Turbulenz, turbulence, unsteady flow, wake, Nachlauf
Event Title:11th European Conference on Turbomachinery (ETC-11)
Event Location:Madrid
Event Type:international Conference
Event Dates:23-27.3.2015
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:propulsion systems
DLR - Research area:Aeronautics
DLR - Program:L ER - Engine Research
DLR - Research theme (Project):L - Fan and Compressor Technologies
Location: Berlin-Charlottenburg
Institutes and Institutions:Institute of Propulsion Technology > Engine Acoustic
Deposited By: Meyer, Dr.-Ing. Robert
Deposited On:12 Jan 2016 11:57
Last Modified:10 May 2016 23:41

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