Browse Publications Technical Papers 2009-01-0303
2009-04-20

Comparison of Lumped and Unsteady 1-D Models for Simulation of a Radial Turbine 2009-01-0303

The physical 1-D model of a radial turbine consists of a set of gas ducts featuring total pressure and/or temperature changes and losses. Therefore, the wave propagation and filling/emptying plays a significant role if a turbine is subjected to unsteady gas flow.
The results of unsteady turbine simulation using the basic modules of generalized 1-D manifold solver in GT Power are demonstrated. The turbine model calibration parameters can be identified by means of 1-D steady model used in optimization code loop.
The examples of model results are compared to steady flow map predictions of turbine efficiency and engine pumping loop work.
The model may be used for prediction of turbine data in out-of-design points as presented in the paper. The other important role of a model, however, is an accurate evaluation of turbine parameters from pressure and speed measurements at an engine in operation.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Preview Document Add to Cart
Members save up to 16% off list price.
Login to see discount.
We also recommend:
TECHNICAL PAPER

Investigation of Radial Turbocharger Turbine Characteristics under Real Conditions

2009-01-0311

View Details

TECHNICAL PAPER

Simulation of Pulsating Flow Unsteady Operation of a Turbocharger Radial Turbine

2008-01-0295

View Details

TECHNICAL PAPER

Calibration and Results of a Radial Turbine 1-D Model with Distributed Parameters

2011-01-1146

View Details

X