JP Journal of Heat and Mass Transfer
Volume 19, Issue 2, Pages 215 - 268
(April 2020) http://dx.doi.org/10.17654/HM019020215 |
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A REVIEW ON TURBINE MASS FLOW RATE PERFORMANCE MAPS EXTRAPOLATION: EXPERIMENTAL STUDY AND MODELS
Georges Salameh, Pascal Chesse and David Chalet
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Abstract: The turbochargers performance maps given by the manufacturer present a narrow range for the turbine mass flow rate which requires extrapolation models. There are different types of models with various degrees of complexity. To build and validate an extrapolation model, the data in the extrapolation range must be measured experimentally. In this paper, different experimental techniques used to expand the turbine mass flow rate measuring range are presented. Then extrapolation models are presented with their different approaches and techniques: there are empirical models based on mathematical equations with calibrating coefficients, and there are semi empirical models based on theoretical equations describing the flow across the turbine with simplification assumptions and calibrating coefficients calculated using the supplier’s data. All these models have their advantages and disadvantages and the key is to find to right compromise between the simplicity of the model, its precision, reliability, and calculation time and power required. |
Keywords and phrases: turbocharger, model, radial turbine simulation, extrapolating performance, mass flow rate.
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