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Swirl flow turbulence modeling
20th Joint Propulsion Conference, 1984Confined turbulent swirling flow data obtained from a single hot-wire using a six-orientation technique are analyzed numerically. The effects of swirl strength and the presence of a strong contraction nozzle further downstream on deduced parameters is also presented and discussed for the case of chamber-to-inlet diameter ratio D/d = 2.
M. ABUJELALA, T. JACKSON, D. LILLEY
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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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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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AIAA Journal, 1975
CHALLENGING problem facing theoretical combustion aerodynamicists today is the prediction of turbulent reacting swirl flows. Prediction greatly facilitates economical design and operation of combustion systems, where flame size, shape, stability, and combustion intensity are often controlled by the use of, among other things, swirl.1 The degree of ...
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CHALLENGING problem facing theoretical combustion aerodynamicists today is the prediction of turbulent reacting swirl flows. Prediction greatly facilitates economical design and operation of combustion systems, where flame size, shape, stability, and combustion intensity are often controlled by the use of, among other things, swirl.1 The degree of ...
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Turbulent nonreacting swirling flows
AIAA Journal, 1984Numerical results for incompressible confined swirling flows in a model combustor were obtained using the k-epsilon and k-l models of turbulence developed by Ramos (1980, 1981). Calculations were performed for a model combustor consisting of a 3.43-cm diameter inner pipe and a 14.5-cm diameter outer pipe.
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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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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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Topology optimization applied to the design of 2D swirl flow devices
Structural And Multidisciplinary Optimization, 2018D. Alonso +3 more
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Journal of Fluid Mechanics, 1971
The modified Oseen method is extended to provide a description of the boundary layers which accompany certain swirling flows over a rigid boundary in a rotating container. By comparison with known results it is shown that a refined procedure has errors of the order of 1% when the inviscid flow is a rigid body rotation; it is anticipated that, for the ...
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The modified Oseen method is extended to provide a description of the boundary layers which accompany certain swirling flows over a rigid boundary in a rotating container. By comparison with known results it is shown that a refined procedure has errors of the order of 1% when the inviscid flow is a rigid body rotation; it is anticipated that, for the ...
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Improving Swirl Flow Generation
51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition, 2013Swirling, vortex and cyclonic flows are widely used in a wide range of different applications in the aerospace, power, energy chemical and other industries. They are used for many different purposes, including flame stabilisation, atomisers, centrifugal separation/or suspension of particles in high velocity flows, mixing processes, as fluidic valves ...
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Flow pattern and pressure drop of gas-liquid two-phase swirl flow in a horizontal pipe
Journal of Central South University, 2019Yongchao Rao +4 more
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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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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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