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Compressible Turbulent Flow Analysis on Variable Nozzle Vane and Spacer in Turbocharger Turbine
ISSN: 0148-7191, e-ISSN: 2688-3627
Published March 06, 2000 by SAE International in United States
Annotation ability available
Event: SAE 2000 World Congress
In order to develop a high-performance turbocharger turbine, compressible turbulent flow analysis is applied to the complicated flow around the nozzle vanes and the spacers. The flow analysis indicates that a combination of a curved nozzle vane and a round spacer causes a low-velocity region at the inner side of the nozzle vane even when the turbine efficiency is highest. As a result of the loss analysis, a teardrop-shaped spacer, which suppresses the low-velocity region and flow separation, is developed, and shown to improve the turbine efficiency. The easiness of the nozzle vane control is also important as well as the high efficiency. The fluid force on the nozzle vane depends on the flow pattern; therefore, the torque about the pivot of the nozzle vane is also numerically calculated.
CitationFukaya, M., Watanabe, M., and Udagawa, T., "Compressible Turbulent Flow Analysis on Variable Nozzle Vane and Spacer in Turbocharger Turbine," SAE Technical Paper 2000-01-0526, 2000, https://doi.org/10.4271/2000-01-0526.
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