Results 21 to 30 of about 34,613 (317)
Modifications to a turbulent inflow generation method for boundary-layer flows [PDF]
, 2011 NUMERICAL simulations of turbulent boundary layers require inflow/outflow boundary conditions. Downstream flow is particularly sensitive to the inlet boundary condition; it is necessary to provide a realistic, coherent series of time-varying velocity ...
Chung, Yongmann M. +9 more
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Turbulent boundary layer noise : direct radiation at Mach number 0.5 [PDF]
, 2013 Boundary layers constitute a fundamental source of aerodynamic noise. A turbulent boundary layer over a plane wall can provide an indirect contribution to the noise by exciting the structure, and a direct noise contribution.
GLOERFELT, Xavier, BERLAND, Julien
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Mathematical modeling and the study of exchange processes in disperse boundary layer control actions
Научный вестник МГТУ ГА, 2019 A significant interest of researchers is attracted to the effective management and forecasting of exchange processes in the boundary layer, which are key for the implementation of effective and reliable equipment. Modeling of exchange processes occurring
A. A. Bondarenko +3 more
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Large-eddy simulation of turbulent flow over a rough surface [PDF]
, 2004 A family of wall models is proposed that exhibits more satisfactory performance than previous models for the large-eddy simulation (LES) of the turbulent boundary layer over a rough surface.The time and horizontally averaged statistics such as mean ...
Robins, Alan +6 more
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Key structure in laminar-turbulent transition of boundary layer with streaky structures
Theoretical and Applied Mechanics Letters, 2019 A numerical simulation is performed to find out a key vortical structure in the laminar-turbulent transition. A low-speed streak is generated inside a laminar boundary layer using an isolated cuboid roughness, aimed at providing an environment unstable ...
Joe Yoshikawa +3 more
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Boundary layers and turbulence
Physical Oceanography, 1999 We analyze the results of investigation of turbulent boundary layers typical of geophysical objects. It is shown that boundary layers of various nature are self-regulating sustems characterized by relatively slow evolutionary processes of formation accompanied by the growth of instabilities of different types and then replaced by the rapid development ...
E. P. Anisimova, A. A. Speranskaya
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Учёные записки Казанского университета: Серия Физико-математические науки, 2020 The effect of the scale and the high intensity of incident-flow turbulence in a boundary layer on a smooth plane plate with rounded edge (experiment T3H) under a zero pressure gradient was analyzed.
V.M. Zubarev
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Optimal wave packets in a boundary layer and initial phases of a turbulent spot [PDF]
, 2010 The three-dimensional global optimal dynamics of a flat-plate boundary layer is studied by means of an adjoint-based optimization in a spatial domain of long – but finite – streamwise dimension. The localized optimal initial perturbation is characterized
DE PALMA, Pietro +6 more
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Experimental Study on Time Evolution of Shock Wave and Turbulent Boundary Layer Interactions
Journal of Applied Fluid Mechanics, 2020 In this paper, a test system based on the Nano-tracer Planar Laser Scattering (NPLS) technique for studying time evolution of unsteady flow structures was finished.
X. G. Lu +4 more
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Definition of Turbulent Boundary-Layer with Entropy Concept
MATEC Web of Conferences, 2016 The relationship between the entropy increment and the viscosity dissipation in turbulent boundary-layer is systematically investigated. Through theoretical analysis and direct numerical simulation (DNS), an entropy function fs is proposed to distinguish
Zhao Rui, Rong Jili, Li Haibo, Ren Fang
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