The Characteristics Research of Tube Vortex Based on Large Eddy Simulation

Dun Zhang; Yuan Zheng; Ying Zhao; Jian Jun Huang

doi:10.4028/www.scientific.net/AMM.121-126.3657

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 121-126The Characteristics Research of Tube Vortex Based...

The Characteristics Research of Tube Vortex Based on Large Eddy Simulation

Abstract:

Numerical simulation of three-dimensional transient turbulent flow in the whole flow passage of a Francis turbine were based upon the large eddy simulation(LES) technique on Smargorinsky model and sliding mesh technology. The steady flow data simulated with the standard k-εmodel was used as the initial conditions for the unsteady simulation. The results show that LES can do well transient turbulent flow simulation in a Francis turbine with complex geometry. The computational method provides some reference for exploring the mechanism of eddy formation in a complex turbulent of hydraulic machinery.

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Periodical:

Applied Mechanics and Materials (Volumes 121-126)

Pages:

3657-3661

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.121-126.3657

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Online since:

October 2011

Authors:

Dun Zhang, Yuan Zheng, Ying Zhao, Jian Jun Huang

Keywords:

Draft Tube, Francis Turbine, Vortex

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References

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