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contributor authorHofmeister, Thomas
contributor authorHummel, Tobias
contributor authorSchuermans, Bruno
contributor authorSattelmayer, Thomas
date accessioned2022-02-04T14:32:58Z
date available2022-02-04T14:32:58Z
date copyright2020/02/03/
date issued2020
identifier issn0742-4795
identifier othergtp_142_03_031016.pdf
identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4273888
description abstractThis paper presents a methodology to compute acoustic damping rates of transversal, high-frequency modes induced by vortex-shedding. The acoustic damping rate presents one key quantity for the assessment of the linear thermoacoustic stability of gas turbine combustors. State-of-the-art network models—as employed to calculate damping rates in low-frequency, longitudinal systems—cannot fulfill this task due to the acoustic noncompactness encountered in the high-frequency regime. Furthermore, it is yet unclear, whether direct eigensolutions of the linearized Euler equations (LEE), which capture the mechanism of vortex shedding, yield correct damping rate results constituted by the implicit presence of acoustic as well as hydrodynamic contributions in these solutions. The methodology's applicability to technically relevant systems is demonstrated by a validation test case using a lab-scale, swirl-stabilized combustion system.
publisherThe American Society of Mechanical Engineers (ASME)
titleModeling and Quantification of Acoustic Damping Induced by Vortex Shedding in Noncompact Thermoacoustic Systems
typeJournal Paper
journal volume142
journal issue3
journal titleJournal of Engineering for Gas Turbines and Power
identifier doi10.1115/1.4044936
page31016
treeJournal of Engineering for Gas Turbines and Power:;2020:;volume( 142 ):;issue: 003
contenttypeFulltext


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