Predication of 3-D Viscous Flowfield of a Centrifugal Impeller ()
Abstract
A three-dimensional viscous code has been developed to solve Reynolds-averaged Navier-Stokes equations. The governing equations in finite volume form are solved by two-step Runge-Kutta scheme with implicit residual smoothing. The eddy viscous is obtained using the Baldwin-Lomax model. A prediction of the 3-D turbulent flow and the performance in the “all-over controlled vortex distribution” centrifugal impeller with a vaneless diffuser has been made for the compressor at design and off-design condition. The predicted effi-ciency is a little higher than the experiment data. These results suggest that the present calculation code is able to determine the flow development in the impeller and also the turbulence model in the centrifugal im-peller should be improved.
Share and Cite:
L. Gao, X. Feng and J. Xie, "Predication of 3-D Viscous Flowfield of a Centrifugal Impeller,"
Energy and Power Engineering, Vol. 3 No. 1, 2011, pp. 29-33. doi:
10.4236/epe.2011.31005.
Conflicts of Interest
The authors declare no conflicts of interest.
References
|
[1]
|
D. Eckardt, “Detailed Flow Investigations within a High Speed Centrifugal Compressor Impeller,” Transaction of the ASME, Journal of Fluids Engineering, Vol. 88, No. 3390, 1976, pp. 390-402. doi:10.1115/1.3448334
|
|
[2]
|
H. Krain and W. Hoffman, “Verification of an Impeller Design by Laser Measurements and 3D-Viscous Flow Calculations,” ASME Paper, No. 89-GT-159, 1989.
|
|
[3]
|
C. Hah and H. Krain, “Second Flows and Vertex Motion in a High-Efficiency Backswept Impeller at Design and off-Design Condition,” ASME Journal of Turbomachinery, Vol. 112, No. 1, 1, 1990, pp. 7-13. doi:10.1115/1.29 27425
|
|
[4]
|
R. Kunz and B. Laskshminarayana, “Navier-Stokes Investigation of a Transonic Centrifugal Compressor Stage Using an Algebraic Reynolds Stress Model,” AIAA Paper, 1992, pp. 92-3311.
|
|
[5]
|
W. N. Dawes, “A Numerical Analysis of the Three-Di- mensional Viscous Flow in a Transonic Compressor Rotor and Comparison with Experiment,” ASME Journal of Turbomachienry, Vol. 109, No. 1, 1987, pp. 83-109. doi: 10.1115/1.3262074
|