Three-dimensional computations of flows in centrifugal pumps and compressors
Abstract
The paper presents a three dimensional, finite difference procedure for calculating viscous flow within the impeller of a centrifugal pump or compressor. Use is made of an irregular, non-orthogonal grid system which is arranged to fit any arbitrary shaped impeller passage. The solution method is incorporated in the CATHY3 (Computer Analysis of Turbomachine Hydrodynamics in 3-dimensions) code. Attention is given to results presented for the B-type impeller for two flow rates, one corresponding to the design point, and one to off-design conditions. Finally, the effects of finite-difference grid, assumed turbulent viscosity, and exit boundary condition are investigated.
- Publication:
-
Performance Prediction of Centrifugal Pumps and Compressors
- Pub Date:
- 1979
- Bibcode:
- 1979ppcp.proc...33M
- Keywords:
-
- Centrifugal Compressors;
- Centrifugal Pumps;
- Computational Fluid Dynamics;
- Viscous Flow;
- Differential Equations;
- Finite Difference Theory;
- Flow Velocity;
- Impellers;
- Fluid Mechanics and Heat Transfer