Results 311 to 320 of about 373,804 (364)

Evolution of turbulent kinetic energy in a perturbed turbulent boundary layer

Thermophysics and Aeromechanics, 2011
The paper considers the evolution of turbulent kinetic energy in a turbulent boundary layer perturbed by suction. The results show that the boundary layer equilibrium is altered in a non-linear manner due to suppression of the structures near the wall. The behavior, however, suggests that the wavelength of alteration of the equilibrium of the layer is ...
O. M. Oyewola, S. M. Adaramola, S. K. Fasogbon   +2 more
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The turbulence kinetic energy budget in convective conditions

Quarterly Journal of the Royal Meteorological Society, 1979
AbstractData from the 1973 Minnesota atmospheric boundary layer experiment are used to investigate details of the turbulence kinetic energy budget in convective conditions. Surface layer results are presented in nondimensional form and compared with conclusions from earlier Kansas data.
S. Caughey, J. Wyngaard
semanticscholar   +2 more sources

Turbulent kinetic energy balance in a LEBU modified turbulent boundary layer

Experiments in Fluids, 1990
An experimental study of the turbulent kinetic energy balance is performed in a LEBU manipulated turbulent boundary layer. The estimation of almost all the terms of the k-equation is obtained by hot wire anemometry. Near the manipulating device, strong alterations are observed, when compared with the natural conditions.
J. Lemay, J. Delville, J. P. Bonnet
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Turbulence Kinetic Energy, Stability and Scaling

1988
Turbulence kinetic energy (TKE) is one of the most important variables in micrometeorology, because it is a measure of the intensity of turbulence. It is directly related to the momentum, heat, and moisture transport through the boundary layer. Turbulence kinetic energy is also sometimes used as a starting point for approximations of turbulent ...
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Turbulent kinetic energy profile during drag reduction

The Physics of Fluids, 1975
Model turbulent kinetic energy profiles expected during drag reduction are synthesized from similarity arguments. At low drag reduction, it is postulated that the radial transport of turbulent kinetic energy and of axial momentum are analogous. Thus, in nondimensional terms, the maximum kinetic energy during drag reduction must exceed the Newtonian ...
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Turbulent Kinetic Energy Dissipation in the Surface Layer

Boundary-Layer Meteorology, 2009
We estimated the turbulent kinetic energy (TKE) dissipation rate $$({\epsilon})$$ for thirty-two 1-h intervals of unstable stratification covering the stability range 0.12 ≤ −z/L ≤ 43 (z/L is the ratio of instrument height to the Obukhov length), by fitting ...
D. Charuchittipan, J. D. Wilson
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Spatial redistribution of turbulent and mean kinetic energy

Physics of Plasmas, 2012
The turbulent spatial redistribution of turbulent and mean kinetic energy and its exchange is investigated in the framework of an K-ε model in a magnetized plasma column. The kinetic energy is transferred from the turbulence into the zonal flow around the shear layer.
P. Manz, M. Xu, N. Fedorczak, S. C. Thakur, G. R. Tynan   +4 more
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Turbulent Kinetic Energy in an Approximate Riemann Solver

Computational Mathematics and Mathematical Physics
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Streambank shear stress estimates using turbulent kinetic energy

Journal of Hydraulic Research, 2012
In tidal environments, the boundary shear stress (BSS) is directly proportional to the turbulent kinetic energy, with a reported proportionality coefficient of 0.19. This coefficient was calculated using velocity time series to determine Reynolds stresses and, ultimately, to estimate the BSS.
Leslie Hopkinson, Theresa Wynn-Thompson
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Study on Turbulent Kinetic Energy in Closed Photobioreactor

Applied Mechanics and Materials, 2013
Microalgae are an important source for biodiesel, one kind of renewable energy. The turbulence of the algal fluid can be intensified through optimizing the structure parameters of the disturbing devices and the operation conditions in photobioreactor, thereby the algae production increased.
Lin Li, Jun Ying Zhu, Jun Feng Rong, Wei Liu, Cheng Gang Bai   +4 more
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