International Science and Technology Journal

The turbine of an automotive turbocharger is essentially one of the elements in the exhaust system which lies between the engine and the silencer. it has a passive effect on the propagation of the primary exhaust noise. This paper presents a preliminary attempt to create a one-dimensional model to predict the characteristics of the flow through the turbine of a turbocharger. The model is a purely fluid mechanic one, without recourse to any empiricism such as a turbine map. The research outlines the development of a redial turbine model for a turbocharger that can be used to inexpensively analyze turbocharger performance. The model is being developed with the intent to reduce the time taken by experiments to help engineers in matching a turbocharger with an engine, a task which is a key step to engine emission reductions. The model uses a coupled system of one-dimensional continuity, momentum and energy equations to analyze the turbine of a turbocharger. The governing equations have been solved simultaneously using a predictor corrector numerical scheme. For this purpose a computer code written in C++ language have been developed. The program calculates all flow fields (velocity, pressure, temperatures,..ie) for the turbocharger model, which can be used as a cost-effective engineering tool for preliminary turbocharger testing during engine upgrades and modifications