Experimental and Theoretical Analysis of the Flow in a Centrifugal Compressor Volute

Ayder, Erkan; Braembussche, R. A. Van den; Brasz, Joost J.

doi:10.1115/1.2929293

Cited by 60 publications

(25 citation statements)

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“…Their results showed a non-uniform flow distribution in the radial and axial directions, which is closely related to the cross-sectional shape. Multiple investigations on the volute cross sectional shape have proven its considerable impact on radial turbine performance [13,14].…”

Section: Introductionmentioning

confidence: 99%

An investigation of volute cross-sectional shape on turbocharger turbine under pulsating conditions in internal combustion engine

Yang

Martinez-Botas

Rajoo

et al. 2015

Energy Conversion and Management

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a b s t r a c tEngine downsizing is a proven method for CO 2 reduction in Internal Combustion Engine (ICE). A turbocharger, which reclaims the energy from the exhaust gas to boost the intake air, can effectively improve the power density of the engine thus is one of the key enablers to achieve the engine downsizing. Acknowledging its importance, many research efforts have gone into improving a turbocharger performance, which includes turbine volute. The cross-section design of a turbine volute in a turbocharger is usually a compromise between the engine level packaging and desired performance. Thus, it is beneficial to evaluate the effects of cross-sectional shape on a turbine performance. This paper presents experimental and computational investigation of the influence of volute cross-sectional shape on the performance of a radial turbocharger turbine under pulsating conditions. The cross-sectional shape of the baseline volute (denoted as Volute B) was optimized (Volute A) while the annulus distribution of area-to-radius ratio (A/R) for the two volute configurations are kept the same. Experimental results show that the turbine with the optimized volute A has better cycle averaged efficiency under pulsating flow conditions, for different loadings and frequencies. The advantage of performance is influenced by the operational conditions. After the experiment, a validated unsteady computational fluid dynamics (CFD) modeling was employed to investigate the mechanism by which performance differs between the baseline volute and the optimized version. Computational results show a stronger flow distortion in spanwise direction at the rotor inlet with the baseline volute. Furthermore, compared with the optimized volute, the flow distortion is more sensitive to the pulsating flow conditions in the baseline volute. This is due to the different secondary flow pattern in the cross-sections, hence demonstrating a direction for desired volute cross-sectional shape to be used in a turbocharger radial turbine for internal combustion engine.

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Section: Introductionmentioning

confidence: 99%

An investigation of volute cross-sectional shape on turbocharger turbine under pulsating conditions in internal combustion engine

Yang

Martinez-Botas

Rajoo

et al. 2015

Energy Conversion and Management

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show abstract

“…Ayder et al used a five hole probe to investigate the flow inside an overhang elliptical cross section volute to give a better insight into the three-dimensional flow structure at different mass flow rate conditions [2,3]. They developed a three-dimensional volute calculation method for this purpose to predict the velocity and pressure distribution inside and at the upstream parts of the volute [3].…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical flow field investigation through two types of radial flow compressor volutes

Mojaddam

Hajilouy-Benisi

2016

Experimental Thermal and Fluid Science

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“…The overall performance of the spiral-shaped volute is affected mainly by the following five geometric parameters: (1) area of the cross-section, (2) shape of the cross-section, (3) radial location of the cross-section, (4) location of the volute inlet and (5) tongue geometry [3] . Based on this five aspects, the present paper will further investigate influence of various volute designs on volute overall performance by using Computational Fluid Dynamics (CFD) method.…”

Section: Introductionmentioning

confidence: 99%

Influence of various volute designs on volute overall performance

Qiang

Teng

2010

J. Therm. Sci.

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This paper discusses the influence of various volute designs on volute overall performance for a certain centrifugal compressor with both vaned and vaneless diffuser. Firstly, based on a free vortex flow pattern and the assumption of a circumferentially uniform flow at the design condition, a corrected method for volute design is adopted.By means of this method, corresponding to five geometric parameters affecting the volute overall performance, ten volute cases are designed. Secondly, the numerical simulation is employed and the detailed flow field and losses in different volutes with different geometric parameters are analyzed. The numerical investigation reveals that in all of the five geometric parameters, the radial location of the cross-section has the strongest influence on the performance of the volute. The non-uniform volute inlet formed by the upward vaned diffuser outlet flow is another important factor. Finally a relatively better value of D 4 /D 2 is concluded.

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Experimental and Theoretical Analysis of the Flow in a Centrifugal Compressor Volute

Cited by 60 publications

References 0 publications

An investigation of volute cross-sectional shape on turbocharger turbine under pulsating conditions in internal combustion engine

An investigation of volute cross-sectional shape on turbocharger turbine under pulsating conditions in internal combustion engine

Experimental and numerical flow field investigation through two types of radial flow compressor volutes

Influence of various volute designs on volute overall performance

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