Numerical analysis of the three-dimensional swirling flow in centrifugal compressor volutes

E. Ayder, R. Van den Braembussche

Araştırma sonucu: Dergiye katkıMakalebilirkişi

68 Atıf (Scopus)

Özet

The improvement of centrifugal compressor performance and the control of the radial forces acting on the impeller due to the circumferential variation of the static pressure caused by the volute require a good understanding of the flow mechanisms and an accurate prediction of the flow pattern inside the volute. A three-dimensional volute calculation method has been developed for this purpose. The volute is discretized by means of hexahedral elements. A cell vertex finite volume approach is used in combination with a time-marching procedure. The numerical procedure makes use of a central space discretization and a four-step Runge-Kutta timestepping scheme. The artificial dissipation used in the solver is based on the fourthorder differences of the conservative variables. Implicit residual smoothing improves the convergence rate. The loss model implemented in the code accounts for the losses due to internal shear and friction losses on the walls. A comparison of the calculated and measured results inside a volute with elliptical cross section reveals that the modified Euler solver accurately predicts the velocity and pressure distribution inside and upstream of the volute.

Orijinal dilİngilizce
Sayfa (başlangıç-bitiş)462-468
Sayfa sayısı7
DergiJournal of Turbomachinery
Hacim116
Basın numarası3
DOI'lar
Yayın durumuYayınlandı - Tem 1994
Harici olarak yayınlandıEvet

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