Turbocharger turbine rotor tip leakage loss and mass flow model valid up to extreme off-design conditions with high blade to jet speed ratio

JR Serrano, R Navarro, LM García-Cuevas… - Energy, 2018 - Elsevier
Due to the power consumption restriction of the turbocharger compressor, common turbine
maps are rather narrow. To extrapolate them, reliable physical submodels are needed that …

A holistic methodology to correct heat transfer and bearing friction losses from hot turbocharger maps in order to obtain adiabatic efficiency of the turbomachinery

JR Serrano, P Olmeda, FJ Arnau… - International Journal of …, 2020 - journals.sagepub.com
Turbocharger performance maps provided by manufacturers are usually far from the
assumption of reproducing the isentropic performance. The reason being, those maps are …

An innovative losses model for efficiency map fitting of vaneless and variable vaned radial turbines extrapolating towards extreme off-design conditions

JR Serrano, FJ Arnau, LM García-Cuevas, LB Inhestern - Energy, 2019 - Elsevier
Pulsating flow in automotive turbocharger turbines makes it necessary to know performance
characteristics in difficult to measure off-design conditions. Physically based extrapolation …

Contribution to tip leakage loss modeling in radial turbines based on 3D flow analysis and 1D characterization

JR Serrano, R Navarro, LM García-Cuevas… - International Journal of …, 2019 - Elsevier
The characterization of tip leakage flow plays an important role for one-dimensional loss
modeling and design in radial turbine research. Tip leakage losses can be expressed as …

Extremely low mass flow at high blade to jet speed ratio in variable geometry radial turbines and its influence on the flow pattern: A CFD analysis

JR Serrano, A Gil, R Navarro… - … Expo: Power for …, 2017 - asmedigitalcollection.asme.org
State of the art car engines are fed by compressed air, coming from a turbocharger
compressor, to increase the power to weight ratio and to allow downsizing the combustion …

Numerical Analysis of the Effects of Grooved Stator Vanes in a Radial Turbine Operating at High Pressure Ratios Reaching Choked Flow

J Galindo, A Tiseira, R Navarro, LB Inhestern… - Aerospace, 2023 - mdpi.com
The flow through the stator vanes of a variable geometry turbocharger turbine can reach
supersonic conditions and generates a shock wave on the stator vanes, which has a …

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Turbocharger performance maps provided by manufacturers are usually far from the
assumption of reproducing the isentropic performance. The reason being, those maps are …

Method for Non-Dimensional Tip Leakage Flow Characterization in Radial Turbines

JR Serrano, R Navarro… - … Expo: Power for …, 2018 - asmedigitalcollection.asme.org
Tip leakage loss characterization and modeling plays an important role in small size radial
turbine research. The momentum of the flow passing through the tip gap is highly related …