Analysis of the blade thickness distribution effects on the turbocharger turbine performance at full and partial admission condition

Authors

1 Department of Mech. Eng., Iran Univ. of Science and Technilogy, Tehran, Iran.

2 Automotive Simulation and Optimal Research Laboratory, School of Automotive Engineering., Iran University of Science and Technology, Tehran, Iran.

Abstract

Turbocharger turbine blade are exposed to damage because of High pressure and Pulsating inlet charge. In recent designed blades, thickness is reduced and loading was increased, these caused the higher probability of blades failiure. Therefore the blades thickness distribution should be defined according to the combination of higher efficiency and higher resistance against failiure. In this paper the Aero static efficiency of the turbin according to different thickness parameters is studied. And the most volnurable area of the bades is identified by the result of the fluid behavior simulation and structural analysis. A 3D CFD model in ANSYS CFX for fluid side, and a FEA model in ANSYS Static Structural module for the blade structural responses were used then the results were coupled. Validation was performed by reference to experimental data. Resuls show that thinner blades are more proper for this kind of turbomachine but in partial admission ticker blades have higher efficiency than thinner blades.

Keywords

References

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Journal of Solid and Fluid Mechanics
Volume 10, Issue 1
April 2020
Pages 297-311

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