Direct Assessment of the Acoustic Scattering Matrix of a Turbulent Swirl Combustor by Combining System Identification, Large Eddy Simulation and Analytical Approaches
Direct Assessment of the Acoustic Scattering Matrix of a Turbulent Swirl Combustor by Combining System Identification, Large Eddy Simulation and Analytical Approaches
复制标题
结合系统辨识、大涡模拟和分析方法直接评估湍流旋流燃烧器的声散射矩阵
DOI:
10.1115/1.4040731
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发表时间:
2018
期刊:
影响因子:
--
通讯作者:
W. Polifke
中科院分区:
文献类型:
--
作者:
M. Merk;R. Gaudron;C. Silva;M. Gatti;C. Mirat;T. Schuller;W. Polifke
This study assesses and compares two alternative approaches to determine the acoustic scattering matrix of a premixed turbulent swirl combustor: (1) The acoustic scattering matrix coefficients are obtained directly from a compressible large eddy simulation (LES). Specifically, the incoming and outgoing characteristic wavesfandgextracted from the LES are used to determine the respective transmission and reflection coefficients via System Identification (SI) techniques. (2) The flame transfer function (FTF) is identified from LES time series data of upstream velocity and heat release rate. The transfer matrix of the reactive combustor is then derived by combining the FTF with the Rankine–Hugoniot (RH) relations across a compact heat source and a transfer matrix of the cold combustor, which is deduced from a linear network model. Linear algebraic transformation of the transfer matrix consequently yields the combustor scattering matrix. In a cross-comparison study that includes comprehensive experimental data, it is shown that both approaches successfully predict the scattering matrix of the reactive turbulent swirl combustor.
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DOI:
--
发表时间:
2012
期刊:
影响因子:
--
作者:
A. Andreini;C. Bianchini;B. Facchini;A. Peschiulli;I. Vitale
通讯作者:
I. Vitale
DOI:
--
发表时间:
2007
期刊:
影响因子:
--
作者:
Alexander M. G. Gentemann;W. Polifke
通讯作者:
W. Polifke
DOI:
--
发表时间:
1998
期刊:
影响因子:
--
作者:
C. Paschereit;W. Polifke
通讯作者:
W. Polifke
影响因子:
2.4
作者:
CHUNG, JY;BLASER, DA
通讯作者:
BLASER, DA
影响因子:
2.5
作者:
Merk, Malte;Polifke, Wolfgang;Schuller, Thierry
通讯作者:
Schuller, Thierry