Chemiluminescence and High Speed Imaging of Reacting Film Cooling Layers

Bibliographic Details
Main Author:	O'Neil, Alanna R.
Language:	English
Published:	University of Dayton / OhioLINK 2011
Subjects:	Aerospace Engineering Film Cooling Chemiluminescence Reacting Boundary Layers Flames Image Analysis
Online Access:	http://rave.ohiolink.edu/etdc/view?acc_num=dayton1324042434

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spelling	ndltd-OhioLink-oai-etd.ohiolink.edu-dayton13240424342021-08-03T05:35:56Z Chemiluminescence and High Speed Imaging of Reacting Film Cooling Layers O'Neil, Alanna R. Aerospace Engineering Film Cooling Chemiluminescence Reacting Boundary Layers Flames Image Analysis <p>The demand for more efficient and compact gas turbine engines has resulted in an increase in the operating temperatures and pressures and a decrease in combustor weight and size. These advances may result in incomplete combustion products entering the turbine section. The products can react with the air intended to cool the turbine vanes, and the resulting flame can cause damage to the engine. This study reports chemiluminescence measurements of flames and correlates these to heat release rate and the measured heat flux to a surface. To accomplish this, fuel rich combustion products are generated in a well-stirred reactor. The flow of products is directed over a flat plate with cooling air jets normal to the flow. Chemiluminescence data of the flames is obtained, along with high speed images, and temperature measurements of the flow inside the test section. Three film cooling geometries are studied: normal holes, fan shaped holes, and slot. Measurements are acquired at three equivalence ratios (1.3, 1.4, and 1.5) at three different blowing ratios (M = 1, 4, and 7). </p><p>It is found that the rate of heat release from the flame does not always trend the same as the heat transfer to the surface. It is also seen that a large reaction region does not always equate to high heat flux to the surface. If enough cooling air is present the surface is protected from the heat released from the flame.</p> 2011 English text University of Dayton / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=dayton1324042434 http://rave.ohiolink.edu/etdc/view?acc_num=dayton1324042434 unrestricted This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws.
collection	NDLTD
language	English
sources	NDLTD
topic	Aerospace Engineering Film Cooling Chemiluminescence Reacting Boundary Layers Flames Image Analysis
spellingShingle	Aerospace Engineering Film Cooling Chemiluminescence Reacting Boundary Layers Flames Image Analysis O'Neil, Alanna R. Chemiluminescence and High Speed Imaging of Reacting Film Cooling Layers
author	O'Neil, Alanna R.
author_facet	O'Neil, Alanna R.
author_sort	O'Neil, Alanna R.
title	Chemiluminescence and High Speed Imaging of Reacting Film Cooling Layers
title_short	Chemiluminescence and High Speed Imaging of Reacting Film Cooling Layers
title_full	Chemiluminescence and High Speed Imaging of Reacting Film Cooling Layers
title_fullStr	Chemiluminescence and High Speed Imaging of Reacting Film Cooling Layers
title_full_unstemmed	Chemiluminescence and High Speed Imaging of Reacting Film Cooling Layers
title_sort	chemiluminescence and high speed imaging of reacting film cooling layers
publisher	University of Dayton / OhioLINK
publishDate	2011
url	http://rave.ohiolink.edu/etdc/view?acc_num=dayton1324042434
work_keys_str_mv	AT oneilalannar chemiluminescenceandhighspeedimagingofreactingfilmcoolinglayers
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Chemiluminescence and High Speed Imaging of Reacting Film Cooling Layers

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