Numerical Study of Unsteady Performance of a Double-entry Turbocharger Turbine under Different A/R Value Conditions Tongji University

Format:

Conference/Event

Author/Creator:

Fan, Fan, author.

Contributor:

Liu, Yungang

Ni, Jimin

Wang, Hang

Zhu, Zhifu

Conference Name:

SAE 2016 World Congress and Exhibition (2016-04-12 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2016

Summary:

AbstractTurbocharging industry mainly employ steady method in the design and development process in present. However, the unsteady method is becoming more important for the exploration of the advanced turbocharging technique. This paper discusses the influences of A/R value on unsteady performances of a double-entry turbocharger turbine. In the study, numerical simulation has been done by ANSYS CFX software, The turbine have three kinds of A/R values that change in order, and the three schemes has the same unsteady flow boundary conditions. The simulation results show that the unsteady turbine performances have the characteristics loops representing filling and emptying effects. And the unsteady performances of the three schemes have some regular differences. The mean unsteady turbine efficiency decreases with increasing A/R value in the involved range, but the overall entropy of the turbine in a pulse period has no significant differences. In this paper, the flow loss of the turbine is analyzed to explore the mechanism of the influence of A/R value on unsteady turbine performances the from flow field aspect. The study may be helpful to have better understanding and comprehension of the actual working principle of turbocharger turbine and offer reference for future designs

Notes:

Vendor supplied data

Publisher Number:

2016-01-1031

Access Restriction:

Restricted for use by site license