Results 21 to 30 of about 204,183 (308)

The effect of wall cooling on a compressible turbulent boundary layer [PDF]

open access: yes, 1974
Experimental results are presented for two turbulent boundary-layer experiments conducted at a free-stream Mach number of 4 with wall cooling. The first experiment examines a constant-temperature cold-wall boundary layer subjected to adverse and ...
Gran, R. L., Kubota, T., Lewis, J. E.
core   +1 more source

Mathematical modeling and the study of exchange processes in disperse boundary layer control actions

open access: yesНаучный 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
doaj   +1 more source

Key structure in laminar-turbulent transition of boundary layer with streaky structures

open access: yesTheoretical 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
doaj   +1 more source

An experimental investigation of the recirculation zone formed downstream of a forward facing step [PDF]

open access: yes, 2010
An experimental investigation of the recirculation zone formed downstream of a forward facing step immersed in a turbulent boundary layer has been undertaken using particle image velocimetry.
Lo Jacono, David   +2 more
core   +2 more sources

The influence of strongly turbulized liquid flow parameters on the near-wall transitional flows in the boundary layer

open access: yesУчёные 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
doaj   +1 more source

Experimental Study on Time Evolution of Shock Wave and Turbulent Boundary Layer Interactions

open access: yesJournal 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
doaj  

Definition of Turbulent Boundary-Layer with Entropy Concept

open access: yesMATEC 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
doaj   +1 more source

On injection-ejection fluid influence through different accelerating porous surfaces on unsteady 2d incompressible boundary layer characteristics [PDF]

open access: yesTheoretical and Applied Mechanics, 2005
Through the porous contour in perpendicular direction, the fluid of the same properties as incompressible fluid in basic flow, has been injected or ejected with velocity who is a function of the contour longitudinal coordinate and time. The corresponding
Ivanović Dečan, Ivanović Vladan
doaj   +1 more source

Advances in the Prediction of the Statistical Properties of Wall-Pressure Fluctuations under Turbulent Boundary Layers

open access: yesFluids, 2022
Analytical or empirical models of the wall-pressure power spectral density under a turbulent boundary layer are often validated on test cases in an incompressible flow regime.
Gabriele Grasso   +2 more
doaj   +1 more source

Selection of boundary conditions for modeling the turbulent exchange processes within the atmospheric surface layer [PDF]

open access: yesКомпьютерные исследования и моделирование, 2018
One- and two-dimensional hydrodynamic models of turbulent transfer within the atmospheric surface layer under neutral thermal stratification are considered.
Ju. V. Muhartova   +3 more
doaj   +1 more source

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