Twin-entry turbine modelling for high efficiency engines
A turbine is placed in an engine system to make use of energy contained in exhaust gases. It receives hot gases that are left over from the combustion process and converts them into useful shaft power that increases overall efficiency. The flow from each cylinder is highly dynamic since it is created by the exhaust valve opening and closing. An engine with more than four cylinders must separate the flows in order to prevent interaction that can lose some of the available energy. A twin-entry turbine is designed with two inlets and a divider to keep these flows separate until they reach the impeller. This research project will aim to simulate a twin-entry turbine by creating a new model that can predict its performance when exposed to realistic pulsating flow. This model needs to be fast-running in order to successfully integrate it into a larger engine system simulation.