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Results of Volumetric PIV and High Resolution PIV on a Transonic Cascade

Klinner, Joachim and Willert, Christian and Voges, Melanie and Hergt, Alexander and Scharnowski, Sven and Fuchs, Thomas and Kähler, Christian (2013) Results of Volumetric PIV and High Resolution PIV on a Transonic Cascade. DLR-Interner Bericht, Project Report. AFDAR-D5.4 und DLR-IB 325-05-14, 24 S.

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

Abstract

Tomographic PIV (tomo-PIV), conventional stereo PIV (SPIV) and astigmatism particle tracking (APTV) are utilized in order to characterize the complex transonic flow within a highly loaded compressor cascade at M1 = 0.60. The flow is dominated by a passage vortex which is driven by the pitchwise pressure gradient between pressure and suction side. The investigation presented herein demonstrates the applicability of volumetric PIV and high resolution PIV in a highly loaded compressor cascade at M1=0.60. With four simultaneous camera views it was possible to measure the complex corner flow of the cascade volume at three regions with respect to the side wall. The final vector resolution is 54×74×13 vectors at a spacing of 0.64 mm in x (chord-wise direction) and a spacing of 0.32 mm in y and z. Averaged results of the corner flow are presented to show conformance to the expected flow. The feasibility study on Astigmatism particle tracking (APTV) using a single camera concentrates on the evaluation of the calibration function through the tunnel window. Due to the relatively low laser pulse energy and laser light reflection the signal to noise ratio (SNR) was not sufficiently high. The measurements were complemented with stereo PIV (SPIV) measurements at distinct planes to provide a basis for comparison between the employed volumetric techniques.

Item URL in elib:https://elib.dlr.de/88906/
Document Type:Monograph (DLR-Interner Bericht, Project Report)
Additional Information:Forschungsbericht im Rahmen des Forschungsvorhabens EU-FP7/AFDAR (ADVANCED FLOW DIAGNOSTICS FOR AERONAUTICAL RESEARCH)
Title:Results of Volumetric PIV and High Resolution PIV on a Transonic Cascade
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Klinner, Joachimjoachim.klinner (at) dlr.deUNSPECIFIED
Willert, Christianchris.willert (at) dlr.deUNSPECIFIED
Voges, Melaniemelanie.voges (at) dlr.deUNSPECIFIED
Hergt, Alexanderalexander.hergt (at) dlr.deUNSPECIFIED
Scharnowski, SvenUni BW MünchenUNSPECIFIED
Fuchs, ThomasUni BW MünchenUNSPECIFIED
Kähler, ChristianUni BW MünchenUNSPECIFIED
Date:10 June 2013
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Number of Pages:24
Status:Published
Keywords:tomographic PIV, stereo PIV, transonic cascade, instantaneous corner flow, passage vortex
Institution:DLR Institut für Antriebstechnik
Department:Optische Triebwerksmesstechnik
HGF - Research field:Energy
HGF - Program:Efficient Energy Conversion and Use (old)
HGF - Program Themes:Power Plants (old)
DLR - Research area:Energy
DLR - Program:E VG - Combustion and Gas Turbine Technologies
DLR - Research theme (Project):E - Gasturbine (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Propulsion Technology > Engine Measurement Systems
Deposited By: Klinner, Joachim
Deposited On:28 Apr 2014 11:41
Last Modified:28 Apr 2014 11:41

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