Logarithmic mean temperature profiles and their connection to plume emissions in turbulent Rayleigh-B\'enard convection [PDF]
, 2015 Two-dimensional simulations of Rayleigh-B\'enard convection at $Ra = 5\times10^{10}$ show that vertical logarithmic mean temperature profiles can be observed in regions of the boundary layer where thermal plumes are emitted.
Grossmann, Siegfried +4 more
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Entropy Fluctuations and Correlations in Compressible Turbulent Plane Channel Flow
EntropyThe thermodynamic turbulence structure of compressible aerodynamic flows is often characterised by the correlation coefficient of entropy with pressure or temperature.
G. A. Gerolymos, I. Vallet
doaj +1 more source
Direct Numerical Simulation of Supersonic Turbulent Boundary Layer with Spanwise Wall Oscillation
Energies, 2016 Direct numerical simulations (DNS) of Mach = 2.9 supersonic turbulent boundary layers with spanwise wall oscillation (SWO) are conducted to investigate the turbulent heat transport mechanism and its relation with the turbulent momentum transport.
Weidan Ni +3 more
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SYMMETRY CLASSIFICATION OF NEWTONIAN INCOMPRESSIBLEFLUID’S EQUATIONS FLOW IN TURBULENT BOUNDARY LAYERS [PDF]
Vestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2017 Lie group method is applicable to both linear and non-linear partial differential equations, which leads to find new solutions for partial differential equations.
Nadjafikhah M., Hejazi S.R.
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Higher-Order Correlations Between Thermodynamic Fluctuations in Compressible Aerodynamic Turbulence
EntropyThis paper studies the exact and approximate relations between fluctuations in thermodynamic variables (pressure, density and temperature) that are imposed by the dilute-gas (Z=1) equation-of-state (EoS), which is a satisfactory approximation of air ...
Georges A. Gerolymos, Isabelle Vallet
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Program for calculating laminar and turbulent boundary layers in arbitrary pressure gradients [PDF]
, 1972 Computer program predicts growth of boundary layers along any surface where air is flowing. Two integral methods, Cohen-Reshotko and Sasman-Cresici, calculate laminar boundary layers and turbulent boundary layers, respectively; Schlichting-Granville ...
Mcnally, W. D.
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Journal of Advances in Modeling Earth Systems, 2019 A new semi‐empirical turbulence parameterization is presented. Key features of the scheme include representation of turbulent diffusivities in terms of the turbulent kinetic energy that is determined by solving a quasi‐equilibrium form of the equation ...
Y. He, N. A. McFarlane, A. H. Monahan
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Properties of the turbulent/non-turbulent interface in boundary layers
, 2016 The turbulent/non-turbulent interface is analysed in a direct numerical simulation of a boundary layer in the range $Re_\theta=2800-6600$, with emphasis on the behaviour of the relatively large-scale fractal intermittent region.
Borrell, Guillem, Jiménez, Javier
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On Reflection of Shock Waves from Boundary Layers [PDF]
, 1952 Measurements of the reflection characteristics of shock waves from a flat surface with a laminar and turbulent boundary layer are presented. The investigations were carried out at Mach numbers from about 1.3 to 1.5 and a Reynolds number of 0.9 x 10^4.
Dhawan, S., Liepmann, H. W., Roshko, A.
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Bubbly Turbulent Drag Reduction Is a Boundary Layer Effect [PDF]
, 2007 In turbulent Taylor-Couette flow, the injection of bubbles reduces the overall drag. On the other hand, rough walls enhance the overall drag. In this work, we inject bubbles into turbulent Taylor-Couette flow with rough walls (with a Reynolds number up ...
Berg, Thomas H. van den +3 more
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