The separation wall effect of a volute twin entry cross section area on the mixed inflow turbine performance
Keywords:
The Twin entry mixed flow turbine, Pulse turbocharging, Unsteady flowAbstract
The pulse turbocharging system is used in many diesel engines and it is fortunate that nozzeleles mixed turbines allow unsteady flow with less performance losses. It operates with a double or sometimes triple-entry casing creating different flow regime in each sector. A nozzleles casing is used, the division of the cross section area takes the wall form in the radial plane. When flow rate through an inlet reach zero reverse flow is formed in the other inlet which affects the advantage given by the divided casing. A numerical investigation on the effect of the length of the dividing wall in the radial plane is performed using the ANSYS code. This possibility is explored and the results show that extending the wall to a limiting length enhances the flow behavior with better performance.Downloads
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