OH-planar fluorescence measurements of pressurized, hydrogen premixed flames in the SimVal combustor

被引：0
|
作者：
Strakey, P.A. [1 ,3 ]
Woodruff, S.D. [1 ,3 ]
Williams, T.C. [2 ,4 ]
Schefer, R.W. [2 ,4 ]
机构：
[1] National Energy Technology Laboratory, Morgantown, WV 26507, United States
[2] Sandia National Laboratories, Livermore, CA 94551, United States
[3] Energy Systems Dynamics Division, 3610 Collins Ferry Road, United States
[4] Hydrogen and Combustion Technologies, Post Office Box 969, United States
来源：
AIAA Journal | 2008年 / 46卷 / 07期
关键词：
Planar laser-induced fluorescence measurements of the hydroxyl radical in lean; premixed natural gas flames augmented with hydrogen are presented. The experiments were conducted in the Simulation Validation combustor at the National Energy Technology Laboratoryatoperating pressures from 1to8atmospheres. The data; which were collected in a combustor with well-controlled boundary conditions; are intended to be used for validating computational fluid dynamics models under conditions directly relevant to land-based gas turbine engines. The images; which show significant effects of hydrogen on local flame quenching; are discussed in terms of a turbulent premixed combustion regime and nondimensional parameters suchasKarlovitz number. Pressure was foundtothin the OH region; but only had a secondary effect on overall flame shape compared with the effects of hydrogen addition; which was found to decrease local quenching and shorten the turbulent flame brush. A method to process the individual images based on local gradients of fluorescence intensity is proposed; and results are presented. Finally; the results of several large eddy simulations are presented and compared with the experimental data in an effort to understand the issues related to model validation; especially for simulations that do not include OH as an intermediate species;
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摘要：
Conference article (CA)
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页码：1604 / 1613
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