Prediction of the steady and non-steady flow performance of a highly loaded mixed flow turbine
- 1 May 1998
- journal article
- research article
- Published by SAGE Publications in Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy
- Vol. 212 (3), 173-184
- https://doi.org/10.1243/0957650981536844
Abstract
This paper describes a method for predicting the performance under both turbine inlet steady state and non-steady state flow conditions of a mixed flow turbine used for turbocharged internal combustion engines. The mixed flow turbine steady state performances computed with the steady state performance prediction method are in good agreement with the experimental results obtained in the Imperial College turbocompressor cold air test rig. The unsteady state performance is computed using a one-dimensional model based on the solution of the unsteady one-dimensional flow equations. These equations are solved in the volute by a finite difference method using a four-step explicit Runge—Kutta scheme. The instantaneous volute exit condition is provided by the steady state rotor performance prediction model with the assumption of a quasi-steady state flow in the rotor. The computed instantaneous performances are in reasonable agreement with published experimental data for the same mixed flow turbine. The unsteady flow model is also used to study the effects of the frequency and the amplitude of the pulse on the performances of the mixed flow turbine.Keywords
This publication has 2 references indexed in Scilit:
- Modelling of a Turbocharger Turbine Under Pulsating Inlet ConditionsProceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, 1996
- Design of a Highly Loaded Mixed Flow TurbineProceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, 1992