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Listar por palabra clave "Off-design"

Mostrando ítems 1-6 de 6

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

Serrano, J.R.; Arnau Martínez, Francisco José; García-Cuevas González, Luis Miguel; Inhestern, Lukas Benjamin (Elsevier, 2019-08-01)

[EN] Pulsating flow in automotive turbocharger turbines makes it necessary to know performance characteristics in difficult to measure off-design conditions. Physically based extrapolation models can be used to extrapolate ...
Contribution to Tip Leakage Loss Modeling in Radial Turbines Based on 3D Flow Analysis and 1D Characterization

Serrano, J.R.; Navarro, Roberto; García-Cuevas González, Luis Miguel; Inhestern, Lukas Benjamin (Elsevier, 2019-08)

[EN] The characterization of tip leakage flow plays an important role for one-dimesional loss modeling and design in radial turbine research. Tip leakage losses can be expressed as function of fluid momentum and mass flow ...
Development and validation of a radial turbine efficiency and mass flow model at design and off-design conditions

Serrano Cruz, José Ramón; Arnau Martínez, Francisco José; García-Cuevas González, Luis Miguel; Dombrovsky, Artem; Tartoussi, H. (Elsevier, 2016-11-15)

Turbine performance at extreme off-design conditions is growing in importance for properly computing turbocharged reciprocating internal combustion engines behaviour during urban driving conditions at current and future ...
Development of Choked Flow in Variable Nozzle Radial Turbines

Tiseira, Andrés-Omar; García-Cuevas González, Luis Miguel; Inhestern, Lukas Benjamin; Echavarria-Olaya, Juan David (SAGE Publications, 2022-08)

[EN] In commonly applied one-dimensional choking models for radial turbines, choked flow is assumed to appear in the geometrical throat of each stator and rotor. Coupled and complex three-dimensional effects are not ...
Radial turbine performance measurement under extreme off-design Conditions

Serrano, J.R.; Tiseira, Andrés Omar; García-Cuevas González, Luis Miguel; Inhestern, Lukas Benjamin; Tartoussi, H. (Elsevier, 2017)

[EN] During automotive urban driving conditions and future homologation cycles, automotive radial turbines experience transient conditions, whereby the same operate at very high blade speed ratios and, thus, at very low ...
Turbocharger turbine rotor tip leakage loss and mass flow model valid up to extreme off-design conditions with high blade to jet speed ratio

Serrano, J.R.; Navarro, Roberto; García-Cuevas González, Luis Miguel; Inhestern, Lukas Benjamin (Elsevier, 2018)

[EN] 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 are valid for broad ranges. Plenty of ...