A Centrifugal Compressor Performance Map Empirical Prediction Method for Automotive Turbochargers
-
Antonios Fatsis
,
Nikolaos Vlachakis
Abstract
Centrifugal compressor performance map prediction is of primary importance for safe and effective operation of turbochargers. This article is a contribution on compressor map prediction using empirical relations based on automotive turbocharger manufacturers’ performance maps. The present method evaluates the minimum and the maximum air flow rates, as well as the maximum compressor pressure ratio by original empirical equations exploiting impeller geometrical data. Newly introduced equations based on the mass flows and the maximum pressure ratio acquired above provide the compressor characteristic lines. The method is validated by applying it to various commercial automotive turbochargers with known performance maps from their manufacturers. At intermediate values of impeller speed, where the turbocharger is expected to match the engine, the computed compressor map agrees to the manufacturer’s data, while, differences are observed at the maximum impeller speed line. From the cases examined, it can be stated that the present model can be applied to predict small diameter, high rotational speed compressor performance, particularly at the high efficiency region that the turbocharger is supposed to match the IC engine.
Nomenclature
-
-
Impeller diameter
- M
-
Mach number
- Ν
-
Angular impeller speed in RPM
- P
-
Static pressure
-
-
Compressor Pressure Ratio
- T
-
Static Temperature
-
-
Number of impeller blades
- c
-
Absolute velocity
-
-
Mass Flow
- u
-
Tangential velocity
-
-
Blade angle at impeller trailing edge
- γ
-
Ratio of specific heats
- σ
-
Solidity
- ρ
-
Density
- ψ
-
Load coefficient
- Subscripts
- h
-
Impeller hub
- m
-
Projection in the axial direction
- max
-
Maximum
- min
-
Minimum
- t
-
Impeller tip
- Abbreviations
- IC
-
Internal Combustion
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© 2019 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- Review
- Assessment of Exit Temperature Pattern Factors in an Annular Gas Turbine Combustor: An Overview
- Original Research Articles
- Optimization of Trenched Film Cooling Using RSM Coupled CFD
- Modeling of Relative Exergy Destruction for Turboprop Engine Components Using Deep Learning Artificial Neural Networks
- Direct Thrust Inverse Control of Aero-Engine Based on Deep Neural Network
- Entropy, Energy and Exergy for Measuring PW4000 Turbofan Sustainability
- A Centrifugal Compressor Performance Map Empirical Prediction Method for Automotive Turbochargers
- Unsteady Numerical Simulation in a Supersonic Compressor Cascade with a Strong Shock Wave
- CFD Study of Combined Impingement and Film Cooling Flow on the Internal Surface Temperature Distribution of a Vane
- CFD Analysis of Flow and Performance Characteristics of a 90°curved Rectangular Diffuser: Effects of Aspect Ratio and Reynolds Number
- Effects of the Recess Length of the Pilot Stage on the Lean Blowout Limits for the Multipoint Lean Direct Injection Combustors
- Stress and Vibration Analysis of a PDC (Pulse Detonation Chamber)
- Transverse Injection Experiments within an Axisymmetric Scramjet Combustor
Artikel in diesem Heft
- Frontmatter
- Review
- Assessment of Exit Temperature Pattern Factors in an Annular Gas Turbine Combustor: An Overview
- Original Research Articles
- Optimization of Trenched Film Cooling Using RSM Coupled CFD
- Modeling of Relative Exergy Destruction for Turboprop Engine Components Using Deep Learning Artificial Neural Networks
- Direct Thrust Inverse Control of Aero-Engine Based on Deep Neural Network
- Entropy, Energy and Exergy for Measuring PW4000 Turbofan Sustainability
- A Centrifugal Compressor Performance Map Empirical Prediction Method for Automotive Turbochargers
- Unsteady Numerical Simulation in a Supersonic Compressor Cascade with a Strong Shock Wave
- CFD Study of Combined Impingement and Film Cooling Flow on the Internal Surface Temperature Distribution of a Vane
- CFD Analysis of Flow and Performance Characteristics of a 90°curved Rectangular Diffuser: Effects of Aspect Ratio and Reynolds Number
- Effects of the Recess Length of the Pilot Stage on the Lean Blowout Limits for the Multipoint Lean Direct Injection Combustors
- Stress and Vibration Analysis of a PDC (Pulse Detonation Chamber)
- Transverse Injection Experiments within an Axisymmetric Scramjet Combustor
