Influence of flow field dynamics on soot evolution in an aero-engine model combustor
نویسندگان
چکیده
Large-Eddy Simulation of a sooting aero-engine model combustor is analyzed by means proper orthogonal decomposition (POD) to investigate the influence flow field dynamics on soot evolution. Since classical POD fails extract low-frequency intermittent scalars such as volume fraction, recently-introduced multiresolution (MRPOD) deployed treat LES results instead. MRPOD essentially provides additional dynamic rankings energetic modes via bandpass filters constructed using wavelet packet transform (WPT). In investigated major identified in both velocity and scalar fields include precessing vortex core (PVC) at about 430 Hz (LFD) below 100 Hz. Low-frequency are present whole affect secondary air injection recirculation. While found PVC impact much smaller compared LFD impact.
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ژورنال
عنوان ژورنال: Proceedings of the Combustion Institute
سال: 2021
ISSN: ['1873-2704', '1540-7489']
DOI: https://doi.org/10.1016/j.proci.2020.05.019