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LDV Measurements in an Annular Combustor ModelThis thesis covers the design and setup of a laser doppler velocimeter (LDV) system used to take velocity measurements in an annular combustor model. The annular combustor model is of contemporary design using 60 degree flat vane swirlers, producing a strong recirculation zone. Detailed measurements are taken of the swirler inlet air flow and of the downstream enclosed swirling flow. The laser system used is a two color, two component system set up in forward scatter. Detailed are some of the special considerations needed for LDV use in the confined turbulent flow of the combustor model. LDV measurements in a single swirler rig indicated that the flow changes radically in the first duct height. After this, a flow profile is set up and remains constant in shape. The magnitude of the velocities gradually decays due to viscous damping.
Document ID
19970001603
Acquisition Source
Legacy CDMS
Document Type
Thesis/Dissertation
Authors
Barron, Dean A.
(Purdue Univ. West Lafayette, IN United States)
Date Acquired
September 6, 2013
Publication Date
September 1, 1996
Subject Category
Aircraft Propulsion And Power
Report/Patent Number
E-9865
NASA-CR-182207
NAS 1.26:182207
Accession Number
97N11397
Funding Number(s)
CONTRACT_GRANT: NAS3-24350
PROJECT: RTOP 505-62-21
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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