Phase-locking in post-processing for pulsating flames

被引：39
作者：
Guethe, F. [1 ]
Schuermans, B. [1 ]
机构：
[1] Alcatel Alsthom Rech, CH-5401 Baden, Switzerland
来源：
MEASUREMENT SCIENCE AND TECHNOLOGY | 2007年 / 18卷 / 09期
关键词：
combustion instability; pulsation; flame visualization; phase locking;
D O I：
10.1088/0957-0233/18/9/039
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A new approach to studying thermo-acoustically driven heat release fluctuations has been developed. By performing a phase correlation of the pulsation signal for each instant in time in post-processing, a number of advantages over the usual online processing technique are obtained: many frequencies can be analysed from the same data set allowing faster recording and introducing fewer errors than performing the phase correlation online. The method does not require complicated trigger and delay line setups and is most flexible. As an example of this technique, two different pulsation modes of a swirl combustor are resolved from only 300 chemiluminescence images. Further use of this method for a wide variety of applications is indicated.
引用
收藏
页码：3036 / 3042
页数：7
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