Results 11 to 20 of about 202,523 (309)

Turbulent Kinetic Energy Production in the Vane of a Low-Pressure Linear Turbine Cascade with Incoming Wakes [PDF]

open access: yesInternational Journal of Rotating Machinery, 2015
Incompressible large eddy simulation and direct numerical simulation of a low-pressure turbine at Re=5.18×104 and 1.48×105 with discrete incoming wakes are analyzed to identify the turbulent kinetic energy generation mechanism outside of the blade ...
V. Michelassi, J. G. Wissink
doaj   +4 more sources

Minimalist turbulent boundary layer model [PDF]

open access: yesPhysical Review E, 2009
We introduce an elementary model of a turbulent boundary layer over a flat surface, given as a vertical random distribution of spanwise Lamb-Oseen vortex configurations placed over a non-slip boundary condition line. We are able to reproduce several important features of realistic flows, such as the viscous and logarithmic boundary sublayers, and the ...
openaire   +3 more sources

A Note on the bottom shear stress in oscillatory planetary boundary layer flow [PDF]

open access: yesModeling, Identification and Control, 1988
A simple analytical theory is presented, which describes the motion in a turbulent oscillatory planetary boundary layer near a rough seabed using a two-layer, time-invariant eddy viscosity model.
Dag Myrhaug
doaj   +1 more source

Unsteady Motion of Shock Wave for a Supersonic Compression Ramp Flow Based on Large Eddy Simulation

open access: yesFrontiers in Energy Research, 2022
A large eddy simulation (LES) is conducted to investigate shock wave/turbulent boundary layer interaction in a 24° compression ramp at a high inlet Mach number of Ma=2.9.
Xing Huang   +3 more
doaj   +1 more source

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

Spatial DNS of an Isothermal Flat Plate Supersonic Turbulent Boundary Layer with/out Impinging Shock Wave

open access: yesJournal of Fluid Science and Technology, 2011
Spatial direct numerical simulation results are presented for transitional/turbulent supersonic isothermal flat plate boundary layers at M = 2.0 and impinging shock wave-boundary layer interactions.
Yusuke TOKURA, Hiroshi MAEKWA
doaj   +1 more source

Logarithmic mean temperature profiles and their connection to plume emissions in turbulent Rayleigh-B\'enard convection [PDF]

open access: yes, 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
core   +2 more sources

Laminar-Turbulent Transition of an Inlet Boundary Layer in a Circular Pipe Induced by Periodic Injection (Shape of Isolated Turbulent Patches and Their Growth)

open access: yesJournal of Fluid Science and Technology, 2013
The laminar-turbulent transition of a boundary layer induced by a jet injection in the inlet region of a circular pipe was experimentally investigated.
Masashi ICHIMIYA   +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

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

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