Designing and updating the flow part of axial and radial-axial turbines through mathematical modeling

Abstract

The paper describes an algorithm for the design of axial and radial-axial type turbines. The algorithm is based on using mathematical models of various levels of complexity – from 1D to 3D. Flow path geometry is described by means of analytical methods of profiling using a limited number of parameters. 3D turbulent flow model is realised in the program complex IPMFlow, developed based on the earlier codes FlowER and FlowER-U. Examples of developed or modernized turbines for differentpurpose power machines are presented. They are: an expansion turbine, ORC turbine and cogeneration mediumpressure turbine.

Keywords

• expansion turbine
• ORC turbine
• cogeneration medium-pressure turbine
• CFD
• axial turbine
• radial-axial turbine