Two-step simulation of slat noise
Two-step simulation of slat noise
复制标题
板条噪声的两步模拟
DOI:
10.1016/j.compfluid.2009.10.004
复制
发表时间:
2009
影响因子:
2.8
通讯作者:
W. Schröder
中科院分区:
文献类型:
--
作者:
D. König;S. R. Koh;M. Meinke;W. Schröder
The flow field and the acoustic field of a high-lift configuration consisting of a slat and a main wing are numerically investigated by a hybrid method. In a first step, the unsteady flow field is computed via a large-eddy simulation (LES) and in a second step, the acoustic field is determined by solving the acoustic perturbation equations (APE). The mean flow field is compared to experimental findings followed by an investigation of the turbulent structures which are visualized by λ2contours. The analysis of the acoustic field shows that at the main wing trailing edge acoustic pressure fluctuations of approximately 5kHz are generated. Correlations between the noise sources and the acoustic pressure identify the slat-gap region to be responsible for the mixture of broadband and tonal noise between 1 and 3kHz. The decay of the pressure spectrum is found to be approximately f−2which is in agreement with the literature.
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DOI:
--
发表时间:
1978
期刊:
影响因子:
--
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C. Tam
DOI:
10.1007/s10494-005-8625-y
发表时间:
2005
期刊:
Flow, Turbulence and Combustion
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