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- W2366181269 abstract "In strongly swirling flow, due to interaction between centrifugal force and turbulent pulsation, adverse transfer of energy from turbulent pulsation to average motion is greatly increased. When radial pulsation occurring in the direction of radius increases, centrifugal force does positive work to fluid micro mass of turbulent flow, making its pulsation kinetic energy increase, vice versa. Based on the analyses of effect of centrifugal force, k-e-cf model , a novel modified k- e turbulence model considering work done by centrifugal force in turbulent pulsation, is proposed in the present paper. The characteristic parameters in k-e-cf model are obtained by geometrical average of relevant parameters of big vortex and small eddy, of which frequency of eddy agrees with the experimental data. Aerodynamic field in outlet zone of a coaxial swirling stratified flow burner is numerically simulated. The simulated results with k-e-cf model agree well with the experimental data and have higher precision than those with standard k-e model. When tangential velocity meets with certain distribution, work done by centrifugal force can be ignored, but in general cases, it should be taken into account to reflect anisotropy of strongly swirling flow." @default.
- W2366181269 created "2016-06-24" @default.
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- W2366181269 date "2003-01-01" @default.
- W2366181269 modified "2023-09-26" @default.
- W2366181269 title "A NOVEL MODIFIED TURBULENCE MODEL AND ITS APPLICATION FOR SIMULATION ON AERODYNAMIC FIELD IN OUTLET OF COAXIAL SWIRLING BURNER" @default.
- W2366181269 hasPublicationYear "2003" @default.
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