المجلة الدولية للعلوم والتقنية

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