Three-dimensional viscous flow analysis for centrifugal impellers

Rhie, Chae M.; Delaney, R. A.; Mckain, T.

doi:10.2514/3.22789

Cited by 6 publications

(3 citation statements)

References 3 publications

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“…Though the present numerical procedure was extensively applied to flow field calculations (Rhie and Delaney, 1984, Rhie and Stowers, 1987, rankovic, 1988, Malecki and Lord, 1990, Rhie and Syed, 1990, the code was not widely used for heat transfer application. Therefore the code was validated with test cases before applying to the swirling heat transfer.…”

Section: Validation Of Flow Solvermentioning

confidence: 99%

Computational and experimental investigation of annulus heat transfer with swirl

Kim¹,

Bennett²

1992

28th National Heat Transfer Conference

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Section: Validation Of Flow Solvermentioning

confidence: 99%

Computational and experimental investigation of annulus heat transfer with swirl

Kim¹,

Bennett²

1992

28th National Heat Transfer Conference

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“…The current method is similar to that suggested by Rhie et al (1984), but it is fully elliptic instead of partially parabolic, it solves the energy equation instead of assuming a constant rothalpy condition and it employs a different pressure correction scheme from that used by Rhie et al (1984). In addition, an upwind scheme is utilised unlike the explicit artificial viscosity damping term which is introduced by Rhie et al (1984) to suppress numerical oscillations arising from the use of central difference approximations.…”

Section: Introductionmentioning

confidence: 96%

“…Moore and Moore (1980b) then extended their method to compute the turbulent, compressible flow in a high speed impeller with tip leakage and a stationary shroud. Rhie et al (1984) used a partially parabolic procedure for the analysis of the three-dimensional flow in a high speed impeller with tip leakage. Hah et al (1988) developed a fully elliptic threedimensional viscous flow analysis method with a finite volume relaxation procedure and presented comparisons between numerical and experimental data for the detailed flowfields and overall performance of a backswept impeller at design, choke and near-surge operating conditions.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigations of Centrifugal Compressor Flows with Tip Leakage Using a Pressure Correction Method

Tourlidakis¹,

Elder²

1996

International Journal of Turbo and Jet Engines

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In this paper, a three-dimensional computational model for the solution of the time-averaged Navier-Stokes equations, based on a pressure correction method and the k-ε turbulence model, is presented and implemented for the viscous flow modelling through a series of centrifugal compressors. Theoretical calculations with the current fully elliptic method are carried out and the results are compared critically with available experimental data and with results from other computational models. A radial and two backswept high-speed subsonic compressors with different geometrical and operating characteristics are analysed at design and off-design conditions. In all cases, a wake flow pattern is evident and strong secondary flows are discerned. The tip clearance effects on the relative flow pattern are found to be important and are appropriately simulated. The predictive capability of the current flow model is judged to be encouraging taking into consideration the limitations of the physical models and the numerical schemes involved in the computations. 1. Abstract Nomenclature A, A p Coefficients of the finite difference VR Relative velocity g* J Grid metric coefficients k Turbulence kinetic energy m' Local mass source ρ Static pressure p' Static pressure correction u, v, w Cartesian velocity components x, y, ζ Cartesian coordinates equations C r Specific heat at constant pressure C", C,, C2 Constants in the k-ε turbulence model G Production rate of turbulence kinetic I J Ρ R G c energy Rotation and curvature modification term Rothalpy Jacobian of the coordinate transformation Total pressure Distance from the axis of rotation Γ Diffusion coefficient for the general transport equation Δξ,Δη,Δζ Cell boundary dimensions in the transformed plane Θ Relative flow angle Φ General scalar quantity Ω Rotational speed of the impeller ε Dissipation rate of turbulence energy Sijic 1 if ijk cyclic, -1 if ijk anti-cyclic, 0 otherwise S Source term in the general transport equation Τ Static temperature U, V, W Curvilinear velocity components 35 Brought to you by | provisional account Unauthenticated Download Date | 7/2/15 2:11 AM

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2010

Aerothermodynamics of Turbomachinery

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Three-dimensional viscous flow analysis for centrifugal impellers

Cited by 6 publications

References 3 publications

Computational and experimental investigation of annulus heat transfer with swirl

Computational and experimental investigation of annulus heat transfer with swirl

Numerical Investigations of Centrifugal Compressor Flows with Tip Leakage Using a Pressure Correction Method

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