Results 251 to 260 of about 291,257 (303)

Structure of turbulent pipe flow

Fluid Dynamics, 1972
The problem of turbulent flow in a straight circular pipe is solved. We consider a system consisting of the equation of motion, the equation for the turbulence energy, the expression relating the turbulence coefficient with the turbulence scale, and the integral formula for determining the turbulence scale.
B. G. Vager, D. L. Laikhtman
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Flow Structure of Swirling Turbulent Propane Flames

Flow, Turbulence and Combustion, 2011
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Alekseenko, Sergey V., Dulin, Vladimir M., Kozorezov, Yuriy S., Markovich, Dmitriy M., Shtork, Sergey I., Tokarev, Mikhail P.   +5 more
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Structurally nonlinear fluttering airfoil in turbulent flow

AIAA Journal, 2001
The dynamics and response of a structurally nonlinear two-dimensional airfoil in turbulent flow are investigated numerically. The solution is analyzed in terms of probability density function (PDF), response mean square, power spectral density, and Lyapunov exponent. Both the longitudinal and vertical components of turbulence are considered.
Dominique C. Poirel, Stuart J. Price
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Propagating structures in wall-bounded turbulent flows

Theoretical and Computational Fluid Dynamics, 1991
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Sirovich, L., Ball, K. S., Handler, R. A.   +2 more
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Hierarchical structures in a turbulent pipe flow

Fluid Dynamics Research, 2003
Summary: A hierarchical structure (HS) analysis (\(\beta\)-test and \(\gamma\)-test) is applied to a fully developed turbulent pipe flow. Velocity signals are measured at two cross-sections in the pipe and at a series of radial locations from the pipe wall.
Zou, Zhengping, Zhu, Yuanjie, Zhou, Mingde, She, Zhen-Su   +3 more
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Condensation of Coherent Structures in Turbulent Flows

Physical Review Letters, 2015
Coherent structures are ubiquitous in turbulent flows and play a key role in transport. The most important coherent structures in thermal turbulence are plumes. Despite being the primary heat carriers, the potential of manipulating thermal plumes to transport more heat has been overlooked so far.
Kai Leong, Chong, Shi-Di, Huang, Matthias, Kaczorowski, Ke-Qing, Xia   +3 more
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Coherent structures in turbulent flows

Progress in Aerospace Sciences, 1988
Abstract Coherent structures—loosely defined as regions of concentrated vorticity, characteristic and flow-specific organization, recurrence, appreciable lifetime and scale—have been the foremost object of scientific curiosity and dispute in turbulence research for more than ten years past.
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Structure Functions In A Wall-Turbulent Shear Flow

Boundary-Layer Meteorology, 2002
Wavelet and quadrant analyses were applied to turbulent velocity data in order to investigate the transition from the anisotropy of energy- containing eddies to the isotropy of the inertial subrange scales. The quadrant analysis of the wavelet coefficients of longitudinal and vertical velocity components allows the evaluation of the velocity structure ...
GIOSTRA, UMBERTO, CAVA D., SCHIPA S.
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Turbulent statistics and flow structures in spanwise-rotating turbulent plane Couette flows

Physical Review Fluids, 2016
The effects of anticyclonic rotation on turbulent statistics and flow structures are studied through 20 direct numerical simulations, covering many qualitatively different flow regimes, from rotation numbers $R\phantom{\rule{0}{0ex}}o=0$ to $R\phantom{\rule{0}{0ex}}o=0.9$.
Jie Gai, Zhenhua Xia, Qingdong Cai, Shiyi Chen   +3 more
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Turbulence Structure of Mixing Swirling Flows.

1987
Abstract : This study is an experimental investigation of a swirling inner flow which develops along a constant-diameter centerbody in the presence of an unconfined, axially-directed outer flow. The data which have been acquired include local mean velocity and static pressure profiles at six streamwise locations for different prescribed mass flow rate ...
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