Experimental Study of the Swirling Flow in the Internal Volute of a Centrifugal Compressor

Ayder, Erkan; Braembussche, R. A. Van den

doi:10.1115/91-gt-007

Cited by 22 publications

(17 citation statements)

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“…Related studies have found that the secondary flow in the volute plays the major role on the pressure distortion and velocity distribution in the volute, furthermore, the three-dimensional flow field characteristic in the volute should be also considered [6][7][8] . Gu, et al [9] investigated the interference between the volute and the impeller under off-design condition with numerical method.…”

Section: Introductionmentioning

confidence: 99%

Non-axisymmetric flow characteristics in centrifugal compressor

et al. 2015

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The flow field distribution in centrifugal compressor is significantly affected by the non-axisymmetric geometry structure of the volute. The experimental and numerical simulation methods were adopted in this work to study the compressor flow field distribution with different flow conditions. The results show that the pressure distribution in volute is characterized by the circumferential non-uniform phenomenon and the pressure fluctuation on the high static pressure zone propagates reversely to upstream, which results in the non-axisymmetric flow inside the compressor. The non-uniform level of pressure distribution in large flow condition is higher than that in small flow condition, its effect on the upstream flow field is also stronger. Additionally, the non-uniform circumferential pressure distribution in volute brings the non-axisymmetric flow at impeller outlet. In different flow conditions, the circumferential variation of the absolute flow angle at impeller outlet is also different. Meanwhile, the non-axisymmetric flow characteristics in internal impeller can be also reflected by the distribution of the mass flow. The high static pressure region of the volute corresponds to the decrease of mass flow in upstream blade channel, while the low static pressure zone of the volute corresponds to the increase of the mass flow. In small flow condition, the mass flow difference in the blade channel is bigger than that in the large flow condition.

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Section: Introductionmentioning

confidence: 99%

Non-axisymmetric flow characteristics in centrifugal compressor

et al. 2015

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“…The highly three dimensional flow field inside the centrifugal compressor and pump volutes has been measured by Peck(1951), Muller(1973), Van den Braembussche and Hande(1990), Elholm et al(1990), Ayder and Van den Braembussche(1991).…”

Section: Introductionmentioning

confidence: 99%

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

Ayder

Braembussche

Brasz

1992

Volume 1: Turbomachinery

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Detailed measurements of the swirling flow in a centrifugal compressor volute with elliptical cross section are presented. They show important variations of the swirl- and throughflow velocity, total and static pressure distribution at the different volute cross sections and at the diffuser exit. The basic mechanisms defining the complex 3D flow structure are clarified. The different sources of pressure losses have been investigated and used to improve the prediction capability of one dimensional mean streamline analysis correlations. The tangential flow loss model, under decelerating flow conditions, and friction loss model are confirmed. New emprical loss coefficients are proposed for the exit cone loss model and the tangential flow loss model for the case of accelerating flow in the volute.

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“…Detailed measurements by Ayder et al indicated a very complex, threedimensional (3D) flow within the volute and gave fundamental insights for further research [2][3][4]. It is well known that the volute flow causes a rotationally non-symmetric pressure distribution in the diffuser outlet at off-design conditions: the volute acts as a diffuser at lower than design mass flow and as a nozzle at higher than design mass flow, respectively.…”

Section: Introductionmentioning

confidence: 99%

Influence of the volute on the flow in a centrifugal compressor of a high-pressure ratio turbocharger

Zheng

Huenteler

Yang

et al. 2010

Proceedings of the Institution of Mechanical Engineers, Part A:

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Abstract:The asymmetric influence of the volute on the flow in a transonic, high-pressure ratio centrifugal compressor at off-design conditions was investigated. Fully three-dimensional viscous steady-state computational fluid dynamics (CFD) was applied to simulate the flow in a 4.2:1 design pressure ratio compressor for automotive application. Computed performance characteristics are presented for low-and high-pressure ratio operating conditions, with and without an overhung volute. The volute was found to severely harm aerodynamic stability of the investigated compressor when operating at lower than design mass flow. The relative narrowing effect of the volute on compressor map width increases with pressure ratio up to a 42 per cent drop in stable flow range at design speed. The inter-passage variations in performance quantities and the influence of the volute tongue region are discussed in detail. The circumferential variations of incidence angle correlate with rotational speed, which, in combination with the higher sensitivity to incidence angle at transonic inflow conditions, seems to deteriorates stability when transonic inflow conditions are reached.

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Experimental Study of the Swirling Flow in the Internal Volute of a Centrifugal Compressor

Cited by 22 publications

References 0 publications

Non-axisymmetric flow characteristics in centrifugal compressor

Non-axisymmetric flow characteristics in centrifugal compressor

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

Influence of the volute on the flow in a centrifugal compressor of a high-pressure ratio turbocharger

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