Camprarison of different Turbulent Modeling on Rotating Airfoil with Corolios and centrifugal accelaration

Document Type : Mechanics article

Authors

1 Masters student, Department of Mechanical Engineering, Golpayegan College of Engineering, Isfahan University of Technology, Golpayegan , Islamic Republic Iran

2 Golpaegan College of Engineering, Isfahan University of Technology

Abstract

The blades moving in a circular path have many industrial applications, these include their use in some turbomachines. In more modern turbo machines, such as jet engine compressors, the flow conditions are completely incompressible. On the other hand, 2-D study of the flow around these blades, which shows many characteristics of the flow and to simplify the matter, it is usually unavoidable. In this regard, the simulation method LES and RANS in order to simulate the flow around the NACA0012 airfoil, different modes of fixed and rotating airfoil with opposite attack angle and 3-D impeller mode have been implemented. Lift coefficient, drag coefficient, torque and mass flow of S-A, RNG, SST, RSM and LES models are compared. Among the turbulence methods, the best result for Lift coefficient, drag coefficient and torque coefficient and mass flow of LES method is obtained. In according to, adding "the work of centrifugal forces and Coriolis acceleration" to Momentum equation, a better and more accurate convergence has been achieved compared to the works of others.

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References

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Journal of Modeling in Engineering
Volume 21, Issue 73
June 2023
Pages 135-145

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