numerical research on the mixing mechanism of lobed mixer

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Numerical research on the mixing mechanism of lobed

16/02/2015  Numerical research on the mixing mechanism of lobed mixer with inlet swirl in linear radial distribution. Zhijun Lei, Yanfeng Zhang, Zihao Zhu, and Junqiang Zhu . Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 2015 229: 3, 280-297 Download Citation. If you have the appropriate software installed, you can download

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Numerical Research on the Mixing Mechanism of Lobed Mixer ...

20/09/2016  A detailed numerical simulation is presented to investigate the new de-swirling methods and their effect on the mixing mechanisms of a turbofan mixer with 12 lobes. The numerical simulation employed a commercial solver, ANSYS CFX, using k-ω SST model. The core-to-bypass temperature ratio and pressure ratio were set to 2.59, and 0.97 respectively,

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Numerical research on the mixing mechanism of lobed

Numerical research on the mixing mechanism of lobed mixer with inlet swirl in linear radial distribution. April 2015 ; Proceedings of the Institution of Mechanical Engineers Part A

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Numerical Research on the Mixing Mechanism of Lobed

Request PDF Numerical Research on the Mixing Mechanism of Lobed Mixer With New De-Swirling Structure A detailed numerical simulation is presented to investigate the new de-swirling methods and ...

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Proc IMechE Part A: Numerical research on the mixing J ...

Numerical research on the mixing mechanism of lobed mixer with inlet swirl in linear radial distribution Zhijun Lei, Yanfeng Zhang, Zihao Zhu and Junqiang Zhu Abstract A

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Numerical research on the mixing mechanism of lobed mixer ...

A detailed numerical simulation is presented to investigate the effects of inlet swirl and its radial distribution on the mixing mechanisms of a turbofan mixer with 12 lobes, by using the commercial ANSYS CFX solver and k–ω SST model. The core-to-bypass temperature ratio and pressure ratio were set to 2.59 and 0.97, respectively, giving the Mach number of 0.66 and

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Experimental and numerical research on high pumping ...

Geometric and numerical simulation models of lobed mixer with variation of the ratio of height to width (h/b) of lobe were created based on a lobed mixer in

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Numerical research on the mixing mechanism of lobed mixer ...

A detailed numerical simulation is presented to investigate the effects of inlet swirl and its radial distribution on the mixing mechanisms of a turbofan mixer with 12 lobes, by using the commercial ANSYS CFX solver and k- SST model. The core-to-bypass temperature ratio and pressure ratio were set to 2.59 and 0.97, respectively, giving the Mach number of 0.66 and

Get price

Numerical Research on the Mixing Mechanism of Lobed Mixer ...

A detailed numerical simulation is presented to investigate the new de-swirling methods and their effect on the mixing mechanisms of a turbofan mixer with 12 lobes. The numerical simulation employed a commercial solver, ANSYS CFX, using k-ω SST model. The core-to-bypass temperature ratio and pressure ratio were set to 2.59, and 0.97 respectively, giving the Mach

Get price

Numerical research on the mixing mechanism of lobed mixer ...

A detailed numerical simulation is presented to investigate the effects of inlet swirl and its radial distribution on the mixing mechanisms of a turbofan mixer with 12 lobes, by using the commercial ANSYS CFX solver and k–ω SST model. The core-to-bypass temperature ratio and pressure ratio were set to 2.59 and 0.97, respectively, giving the Mach number of 0.66 and

Get price

Experimental and numerical research on ... - ScienceDirect

01/02/2007  Experimental and numerical research on high pumping performance mechanism of lobed exhauster-ejector mixer ... The boundary conditions for the cold and warm mixing cases are given as follows: (1) At the primary inflow boundary, specified the measured velocity, the turbulent intensity equal 10% average flow velocity and the turbulent viscosity

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High mixing effectiveness lobed nozzles and mixing mechanisms

12/06/2015  In this study, numerical investigations of jet mixing in the lobed nozzles with a central plug and alternating-lobe nozzles in pumping operation were conducted. The effects of the central plugs with the wake ranging from attached to separated flow on the mixing were analyzed, along with the mechanism of improving the mixing performance in a “sword”

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Mixing mechanisms in an axisymmetric lobed mixer ...

A lobed mixer enhances this mixing (thereby reducing the noise) by shaping the circular exhaust nozzle with axisymmetric lobed protuberances, referred to as a “lobed mixer”. Through a series of high-fidelity computational simulations and experiments, we identify the instabilities present in the flow and how their mutual interaction enhances the mixing process. The results are novel

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Experimental and numerical research on ... - ScienceDirect

Experimental and numerical research on high pumping performance mechanism of lobed exhauster-ejector mixer ... According to the experimental and numerical results, the conical mixer with the cross-area ratio of 2.5 and the expand angle of 14.4° gives the highest pumping ratio of 0.528. The highest pumping ratio 0.598 for cylindrical mixers is experimentally in the

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Experimental and Computational Study of Mixing Mechanisms ...

09/09/2013  The mixing mechanisms downstream of an axisymmetric 12-lobed mixer are studied through a combined experimental and computational investigation. A series of simulations based on the unsteady Navier–Stokes equations are used to identify the relative roles of large-scale, instability-driven transient flow structures and smaller-scale turbulence on the flow

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雷志军-中国科学院大学-UCAS

(1) Numerical Research on the Mixing Mechanism of Lobed Mixer with Inlet Swirl in Linear Radial Distribution, Proc. IMechE Part A: J. Power and Energy, 2015, 第 1 作者 (2) The Combined Effects of Surface Roughness with Upstream Wakes on the Boundary Layer Development of an Ultra-High-Lift LPT Blade, International Journal of Turbo and Jet Engines,

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张燕峰-中国科学院大学-UCAS

(25) Numerical Research on the Mixing Mechanism of Lobed Mixer with New De-swirling Structure, ASME Paper, GT2016-58120, 2016, 第 2 作者 (26) Study of Geometric Parameter Influence on Fishtail Pipe Diffuser Performance, ASME Paper, GT2016-57404, 2016, 第 3 作者 (27) Parametric Studying of Low Profile Vortex Generators Flow Control in an Aggressive

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Mixing mechanisms in an axisymmetric lobed mixer ...

A lobed mixer enhances this mixing (thereby reducing the noise) by shaping the circular exhaust nozzle with axisymmetric lobed protuberances, referred to as a “lobed mixer”. Through a series of high-fidelity computational simulations and experiments, we identify the instabilities present in the flow and how their mutual interaction enhances the mixing process. The results are novel

Get price

Numerical Simulation of the Vortical Structures in a Lobed ...

of lobed nozzles/mixers for bulk mixing enhancement and performance improvement of turbofan exhaust systems ... extensive studies about the mechanism by which the lobed mixers/nozzles substantially enhance mixing have also been conducted in past years. Based on pressure, temperature, and velocity measurements of the flow field downstream of a lobed

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Experimental and numerical study of mixing characteristics ...

A combined experimental and computational study on a rectangular lobed mixer is performed. A series of simulations based on a steady Reynolds-averaged Navier-Stokes Simulation (RANS) are conducted to analyse the mixing mechanisms of large-scale streamwise structure shed by the trailing edge of lobed mixer, with emphasis being placed on the effect of turbulence modeling

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High mixing effectiveness lobed nozzles and mixing mechanisms

In this study, numerical investigations of jet mixing in the lobed nozzles with a central plug and alternating-lobe nozzles in pumping operation were conducted. The effects of the central plugs with the wake ranging from attached to separated flow on the mixing were analyzed, along with the mechanism of improving the mixing performance in a “sword” alternating-lobe nozzle.

Get price

Experimental and numerical research on ... - ScienceDirect

Experimental and numerical research on high pumping performance mechanism of lobed exhauster-ejector mixer ... According to the experimental and numerical results, the conical mixer with the cross-area ratio of 2.5 and the expand angle of 14.4° gives the highest pumping ratio of 0.528. The highest pumping ratio 0.598 for cylindrical mixers is experimentally in the

Get price

Mixing Augmentation by Multiple Lobed Jets

02/05/2015  A numerical investigation of multiple lobed jets was performed using the standard k - ε turbulence model. The present work laid emphasis on understanding the mechanism of mixing enhancement by multiple lobed jets. Further studies were carried out to compare mixing performance of multiple lobed jets with that of multiple conventional round jets for the same

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雷志军-中国科学院大学-UCAS

(1) Numerical Research on the Mixing Mechanism of Lobed Mixer with Inlet Swirl in Linear Radial Distribution, Proc. IMechE Part A: J. Power and Energy, 2015, 第 1 作者 (2) The Combined Effects of Surface Roughness with Upstream Wakes on the Boundary Layer Development of an Ultra-High-Lift LPT Blade, International Journal of Turbo and Jet Engines,

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雷志军 - 中国科学院大学 - 航空宇航学院 - X-MOL

(1) Numerical Research on the Mixing Mechanism of Lobed Mixer with Inlet Swirl in Linear Radial Distribution, Proc. IMechE Part A: J. Power and Energy, 2015, 第 1 作者 (2) The Combined Effects of Surface Roughness with Upstream Wakes on the Boundary Layer Development of an Ultra-High-Lift LPT Blade, International Journal of Turbo and Jet Engines,

Get price

张燕峰-中国科学院大学-UCAS

(25) Numerical Research on the Mixing Mechanism of Lobed Mixer with New De-swirling Structure, ASME Paper, GT2016-58120, 2016, 第 2 作者 (26) Study of Geometric Parameter Influence on Fishtail Pipe Diffuser Performance, ASME Paper, GT2016-57404, 2016, 第 3 作者 (27) Parametric Studying of Low Profile Vortex Generators Flow Control in an Aggressive

Get price

朱俊强-中国科学院大学-UCAS

(7) Numerical Research on the Mixing Mechanism of Lobed Mixer with Inlet Swirl in Linear Radial Distribution, Proc. IMechE Part A: J Power and Energy, 2015, 第 4 作者 (8) Effects of low Reynolds number on flow stability of a transonic compressor, Proc. IMechE Part G: Journal of Aerospace Engineering, 2015, 第 3 作者 (9) Parametric Studies of Pipe Diffuser on

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