A finite element method for analysing the 3-D flow in turbomachines
Abstract
A numerical method for analysing the 3-D incompressible potential flow through a cascade in a radial, mixed, or axial flow turbomachine is described. The computational domain consists of an impeller passage and the regions extending to the upstream and downstream boundaries. The velocity potential of absolute flow is calculated using the finite element method of variational principles with hexahedral bilinear elements, and the downstream circulation and relative velocity are obtained by a predictor-corrector method. The calculated velocity vectors and pressure contours for a mixed flow pump impeller are presented for near hub, middle channel, and near casing revolutional surfaces and for near pressure side, middle channel, and near suction side projected meriodional planes. These figures, along with the calculated blade surface pressure distributions for a radial compressor impeller, agree well with the experimental data.
- Publication:
-
Finite Element Flow Analysis
- Pub Date:
- 1982
- Bibcode:
- 1982fefa.proc..751D
- Keywords:
-
- Cascade Flow;
- Computational Fluid Dynamics;
- Finite Element Method;
- Three Dimensional Flow;
- Turbomachinery;
- Flow Equations;
- Flow Velocity;
- Impellers;
- Incompressible Flow;
- Potential Flow;
- Predictor-Corrector Methods;
- Pressure Distribution;
- Fluid Mechanics and Heat Transfer