Numerical Simulation of Impeller–Volute Interaction in Centrifugal Compressors

Hillewaert, Koen; Braembussche, R. A. Van den

doi:10.1115/98-gt-244

Cited by 25 publications

(32 citation statements)

References 8 publications

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“…Wavelike pressure perturbations are caused by the volute tongue; hence, the frequency f can be set as the rotational speed N . Distortion waves of higher frequency, as they were discussed in references [11] and [30], cannot be predicted using the frozen rotor approach. A simulation applying the frozen rotor model is an exact representation of the flow field only in case the Strouhal number is close to zero.…”

Section: Rotor-stator Interactionmentioning

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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Section: Rotor-stator Interactionmentioning

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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“…However, regarding centrifugal compressors, the literatures pay attention on the impeller-diffuser-volute interaction. [9][10][11] In Park and Cimbala's 12 experiments, they found that the two slots configuration outperforms the one slot configuration in rapid wake decay. Corcoran's 13 work showed that the trailing-edge blowing reduces the Reynolds stress, the vorticity and the velocity fluctuations within one chord length downstream.…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation of variable inlet guide vanes with trailing-edge dual slots to decrease the aerodynamic load on centrifugal compressor impeller

Xin

Wang

Liu

2016

Advances in Mechanical Engineering

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In engineering practice, most centrifugal compressors use variable inlet guide vanes which can provide pre-whirl and control volume flow rates. As the impeller of a centrifugal compressor passes through the wakes created from the guide vanes, the aerodynamic parameters change significantly. The concept of adding dual slots at the trailing-edge of the guide vanes is proposed for reducing the aerodynamic load on the compressor impeller blades. In this article, the steady and unsteady performances of the new guide vanes are analysed under two compressor operating conditions (winter and design conditions). The results show that the average amplitude of the impeller passing frequency at the leading edge has a 13% decrease under the winter condition, especially at the middle and root parts. Moreover, the dual slots structure has no effect on the overall compressor performance.

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“…The last decade research becomes more sophisticated, specifically recently, Hillewaert et al [11], Gonzalez et al [12][13][14], Byskov et al [15], Meakhail et al [16], Majidi [17] and Feng et al [18] extended the prediction of the performance at various operating conditions, different from the normal one, taking into account the dynamic effects of the flow.…”

Section: Introductionmentioning

confidence: 99%

Parametric Study of a Centrifugal Pump Impeller by Varying the Outlet Blade Angle

Bacharoudis

Filios²,

Mentzos³

et al. 2008

TOMEJ

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Abstract:The pump design is facilitated by the development of computational fluid dynamics and the complex internal flows in water pump impellers can be well predicted. Various parameters affect the pump performance and energy consumption. The impeller outlet diameter, the blade angle and the blade number are the most critical. The present paper describes the simulation of the flow into the impeller of a laboratory pump in a parametric manner. In this study, the performance of impellers with the same outlet diameter having different outlet blade angles is thoroughly evaluated. The one-dimensional approach along with empirical equations is adopted for the design of each impeller. The predicted performance curves result through the calculation of the internal flow field and a successful correlation of local and global parameters. The numerical solution of the discretized three-dimensional, incompressible Navier-Stokes equations over an unstructured grid is accomplished with a commercial CFD finite-volume code. For each impeller, the flow pattern and the pressure distribution in the blade passages are calculated and finally the head-capacity curves are compared and discussed.

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Numerical Simulation of Impeller–Volute Interaction in Centrifugal Compressors

Cited by 25 publications

References 8 publications

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

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

Numerical investigation of variable inlet guide vanes with trailing-edge dual slots to decrease the aerodynamic load on centrifugal compressor impeller

Parametric Study of a Centrifugal Pump Impeller by Varying the Outlet Blade Angle

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