Numerical Simulation of Flow Inside a Modified Turbocharger Centrifugal Compressor

Jawad, Layth H.; Abdullah, Shahrir; Zulkifli, Rozli; Mahmood, Wan Mohd Faizal Wan

doi:10.3923/ajaps.2012.563.572

Cited by 9 publications

(3 citation statements)

References 6 publications

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“…Changing the impeller's shape and number is another general method for their optimization. In this regard, Layth investigated the effect of inserting two splitter blades between the main blades instead of using conventional method [16]. They could improve the mass flow rate and even efficiency and pressure ratio.…”

Section: Introductionmentioning

confidence: 99%

Flow Simulation and Model Analysis of Efficiency and Pressure Ratio Behaviors in GT4086 Turbocharger Compressor

Omidi

2020

mech

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The present paper seeks to model and simulate the function of a centrifugal GT4082 compressor and evaluates the effects of losses in the impeller, volute, and diffuser. It is also examined the mass parameter effect on the efficiency drop at different speeds. The total and static pressure drops are also examined in the volute and diffuser. Based on the experiments, the efficiency drops in these parts modeled at different mass parameters and speeds discovered to be maximized in the volute and diffuser at a specific speed. A global minimum was observed in the overall pressure drop and a global maximum in the static pressure drop versus a mass parameter.

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Section: Introductionmentioning

confidence: 99%

Flow Simulation and Model Analysis of Efficiency and Pressure Ratio Behaviors in GT4086 Turbocharger Compressor

Omidi

2020

mech

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“…Breaking the shape and number of impellers constitutes the general secondary methods for optimizing impellers. According to this method, [13] investigated the effect of inserting two splitter blades between the main blades rather than relying on the typical setup, and could increase the mass flow rate and even efficiency and the pressure ratio. Moreover, [14] conducted an experimental study on this subject.…”

Section: Introductionmentioning

confidence: 99%

Improving Centrifugal Compressor Performance by Optimizing the Design of Impellers Using Genetic Algorithm and Computational Fluid Dynamics Methods

et al. 2019

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It has always been important to study the development and improvement of the design of turbomachines, owing to the numerous uses of turbomachines and their high energy consumption. Accordingly, optimizing turbomachine performance is crucial for sustainable development. The design of impellers significantly affects the performance of centrifugal compressors. Numerous models and design methods proposed for this subject area, however, old and based on the 1D scheme. The present article developed a hybrid optimization model based on genetic algorithms (GA) and a 3D simulation of compressors to examine the certain parameters such as blade angle at leading and trailing edges and the starting point of splitter blades. New impeller design is proposed to optimize the base compressor. The contribution of this paper includes the automatic creation of generations for achieving the optimal design and designing splitter blades using a novel method. The present study concludes with presenting a new, more efficient, and stable design.

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“…The effect of impeller exit width trimming was studied and discussed along with the effect on overall performance on the basis of experimental data for two impellers was examined by [8].The effect of the piping systems on the surge characteristics was studied by [9]. The effect of engine downsizing to increase the power output and to reduce fuel consumption was studied by [10,23]. The complex shock waves within the diffuser throat and impeller inlet, respectively, within highspeed compressors was studied by [11,12].…”

Section: Introductionmentioning

confidence: 99%

Effect of Vaned Diffuser on a Modified Turbocharger Centrifugal Compressor Performance

Jawad

Abdullah²,

Zulkifli³

et al. 2014

AMM

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A numerical study that was made in a three-dimensional flow, carried out in a modified centrifugal compressor, having vaned diffuser stage, used as an automotive turbo charger. In order to study the influence of vaned diffuser meridional outlet section with a different width ratio of the modified centrifugal compressor. Moreover, the performance of the centrifugal compressor was dependent on the proper matching between the compressor impeller along the vaned diffuser. The aerodynamic characteristics were compared under different meridional width ratio. In addition, the velocity vectors in diffuser flow passages, and the secondary flow in cross-section near the outlet of diffuser were analysed in detail under different meridional width ratio. Another aim of this research was to study and simulate the effect of vaned diffuser on the performance of a centrifugal compressor. The simulation was undertaken using commercial software so-called ANSYS CFX, to predict numerically the performance charachteristics. The results were generated from CFD and were analysed for better understanding of the fluid flow through centrifugal compressor stage and as a result of the minimum width ratio the flow in diffuser passage tends to be uniformity. Moreover, the backflow and vortex near the pressure surface disappear, and the vortex and detachment near the suction surface decrease. Conclusively, it was observed that the efficiency was increased and both the total pressure ratio and static pressure for minimum width ratio are increased.

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Numerical Simulation of Flow Inside a Modified Turbocharger Centrifugal Compressor

Cited by 9 publications

References 6 publications

Flow Simulation and Model Analysis of Efficiency and Pressure Ratio Behaviors in GT4086 Turbocharger Compressor

Flow Simulation and Model Analysis of Efficiency and Pressure Ratio Behaviors in GT4086 Turbocharger Compressor

Improving Centrifugal Compressor Performance by Optimizing the Design of Impellers Using Genetic Algorithm and Computational Fluid Dynamics Methods

Effect of Vaned Diffuser on a Modified Turbocharger Centrifugal Compressor Performance

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