Results 271 to 280 of about 53,364 (314)

Experiments on swirling turbulent flows. Part 1. Similarity in swirling flows

Journal of Fluid Mechanics, 1973
The effects of swirl on internal turbulent flows are studied by conducting experiments on turbulent pipe flow with variable initial swirl. This first part of the study is primarily concerned with similarity laws. The mean velocity profiles, both away from and close to the wall, are found to admit similarity representations at sufficiently large ...
K. S. Yajnik, M. V. Subbaiah
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The Stability of Compressible Swirling Flow

International Journal of Nonlinear Sciences and Numerical Simulation, 2000
Summary: We investigate analytically the stability of inviscid compressible and variable density swirling flows between two concentric cylinders. Two criteria for necessary and sufficient condition for stability are derived under narrow gap approximation. The criteria are compared with other stability criteria for similar flows. Finally, we investigate
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Transonic swirling flow.

AIAA Journal, 1969
An approximation that can be used to determine how swirl affects the choking constraint on flow through the throat of a nozzle is obtained. The flow model is consistent with an experimentally observed flow pattern that contains a recirculating internal cell upstream of the throat.
W. S. LEWELLEN, W. J. BURNS, H. J. STRICKLAND   +2 more
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Swirling flow in cylinders

AIChE Journal, 1961
AbstractThe presence of vortex motion in a vertical cylinder in which water is passed upward can result in three types of velocity profiles: net upward motion at all points in the tube, an ascending outer annulus and a descending central core, and outer annulus and central core ascending and an intermediate annulus descending.All three types of ...
Alfred H. Nissan, V. P. Bresan
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Spectra of Swirling Flow

2009
The Batchelor vortex is adopted as the mathematical model of swirling flow. The modes of the Batchelor vortex fall into three broad categories: core modes, algebraic modes and continuous modes. The core modes have been extensively documented but the last two modes have received little attention. The energy growth of those modes are studied by employing
Xuerui Mao, Spencer J. Sherwin
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Combustion in swirling flow

Symposium (International) on Combustion, 1973
Combustion in high-speed swirling flow is an alternate process to the high-intensity, low-weight combustion chamber for gas turbines. The increase in combustion intensity due to the centrifugal force field, the more-rapid dilution, and the greater stability of the cooling film on the outer wall, are the main advantages of this system. Further, the high
A. Mestre, A. Benoit
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Numerical simulation of compulsive swirling flows field on two-phase swirling flows finishing

International Journal of Computer Applications in Technology, 2007
Two-phase swirling flows finishing is put forward mainly for hole surface. By theoretical analysis and experimental research, the characteristics of compulsive swirling flows field will directly affect the finishing quality and efficiency. On the basic premise of defining k-e model on swirling flows field, numerical simulation of velocity vector graph,
S. Q. Yang, W. H. Li, S. C. Yang
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Swirling Flow and Mixing

2010
A liquid in a rigid vessel subjected to external forced excitation becomes unstable under certain conditions due to strong nonlinear effects [1–12]. A variety of modes of liquid surface oscillations occur such as rotary sloshing or swirl. Such oscillations exert significant influence on the safety of cylindrical tanks preserving petroleum, tankers ...
Manabu Iguchi, Olusegun J. Ilegbusi
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Flowmeters in swirling flows

Journal of Physics E: Scientific Instruments, 1987
An experimental investigation of the character and decay of the asymmetrical swirling flow produced by a double right-angle bend in two perpendicular planes has been carried out. Axial velocities have been measured at a total of 36 points on three parallel chords on each of two measurement stations that were 9 diameters and 35 diameters downstream of ...
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Swirling Impeller Flow

Journal of Turbomachinery, 1988
The results of extensive laser measurements carried out in the blade passages of a newly designed backswept impeller are presented and discussed. Noticeable distortions of the throughflow patterns and a distinct swirling flow character were found inside the rotor.
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