Resolvent analysis of turbulent channel flow with manipulated mean velocity profile
نویسندگان
چکیده
منابع مشابه
Spectral theory of the turbulent mean-velocity profile.
It has long been surmised that the mean-velocity profile (MVP) of pipe flows is closely related to the spectrum of turbulent energy. Here we perform a spectral analysis to identify the eddies that dominate the production of shear stress via momentum transfer. This analysis allows us to express the MVP as a functional of the spectrum. Each part of the MVP relates to a specific spectral range: th...
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We describe a method to investigate the mode shapes in turbulent pipe flow at a given wavenumber pair that are most responsive to harmonic forcing in the sense that the they correspond to the largest singular value in a Schmidt decomposition of the linear NavierStokes operator using the turbulent mean profile as the base flow. The ideas follow logically from the work of Sharma & McKeon (2009), ...
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چکیده ندارد.
15 صفحه اولSimultaneous estimation of heat fluxes applied to the wall of a channel with turbulent flow using inverse analysis
The main purpose of this study is to estimate the step heat fluxes applied to the wall of a two-dimensional symmetric channel with turbulent flow. For inverse analysis, conjugate gradient method with adjoint problem is used. In order to calculate the flow field, two equation model is used. In this study, adjoint problem is developed to conduct an inverse analysis of heat transfer in a channel...
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ژورنال
عنوان ژورنال: Journal of Fluid Science and Technology
سال: 2020
ISSN: 1880-5558
DOI: 10.1299/jfst.2020jfst0014