Results 221 to 230 of about 60,656 (267)
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Hydrotechnical Construction, 1993
1. With an increase of the flow velocity v from 7.58 to 14.67 m/sec and change of k/kcr in the interval of the most erosion-active values from 0.75 to 0.39, Eph increases proportionally to v5, although Ef increases proportionally to v3. This indicates that in the presence of general erosion activity of the cavitation regime of the flow, a small ...
A. V. Efimov, T. Yu. Kuznetsova
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1. With an increase of the flow velocity v from 7.58 to 14.67 m/sec and change of k/kcr in the interval of the most erosion-active values from 0.75 to 0.39, Eph increases proportionally to v5, although Ef increases proportionally to v3. This indicates that in the presence of general erosion activity of the cavitation regime of the flow, a small ...
A. V. Efimov, T. Yu. Kuznetsova
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Magnetohydrodynamics in turbulent swirling flow
1998We report an experimental study of the magnetic field fluctuations generated in a turbulent flow of liquid gallium, in the presence of an externally applied field. We consider the case of a weak‘seed’ field \({\vec B_0}\), so that the Lorentz forces do not modify the flow [1].
P. Odier, J.-F. Pinton, S. Fauve
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Confined swirling flow predictions
21st Aerospace Sciences Meeting, 1983The validity of flowfield predictions resulting from the choice of inlet velocity profiles is assessed. Results demonstrate that realistic predictions are forthcoming only from the inclusion of realistic axial, radial and swirl velocity profiles as inlet conditions.
M. ABUJELALA, D. LILLEY
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25th AIAA Aerospace Sciences Meeting, 1987
The physics of the flow interaction between swirl and secondary flow was studied in duct bends relevant to the design of advanced aircraft nozzle systems. Both laminar and turbulent subsonic flows were investigated in generic duct bends for different amounts of swirl.
TOMMY TSAI, RALPH LEVY
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The physics of the flow interaction between swirl and secondary flow was studied in duct bends relevant to the design of advanced aircraft nozzle systems. Both laminar and turbulent subsonic flows were investigated in generic duct bends for different amounts of swirl.
TOMMY TSAI, RALPH LEVY
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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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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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Turbulent swirling reacting flow
32nd Aerospace Sciences Meeting and Exhibit, 1994Many combustion systems utilize the strong favorable effects of applying swirl to injected air and fuel, so aiding the stabilization of high-intensity combustion processes, and good flowfield characterization is of prime concern. The improvement and use of modeling work will complement and significantly reduce the cost of experimental development ...
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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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