Numerical study on flows within an shrouded centrifugal impeller passage

Title & Authors
Numerical study on flows within an shrouded centrifugal impeller passage
Kim, Seong-Won; Jo, Gang-Rae;

Abstract
The flow analysis method which had been developed for the numerical calculation of 3-dimensional, incompressible and turbulent flow within an axial compressor was extended to the flow field within centrifugal impeller. In this method based on the SIMPLE(Semi Implicit Method Pressure Linked Equations) algorithm, the coordinate transformation was adopted and the standard k-.epsilon. model using wall function was used for turbulent flow analysis. The calculated flow fields have agreed very well with measurement results. Especially, 3-dimensional and viscous flow characteristics including secondary flows, jet-wake flow and decreased pressure rise along impeller passage, which can't be predicted by inviscid Q3D calculation were predicted very reasonably.
Keywords
Shrouded Centrifugal Impeller;Radial Vane;Wake-Jet;Secondary Flow;3-Dimensional Turbulent Flow;Standard k-$\small{\varepsilon}$ Model;
Language
Korean
Cited by