

This approach provides a fast and cost-effective layout procedure for machine components. This way, only the fine tuning must be made in physical tests. The authors have used flow analysis as a theoretical tool - a numerical test stand - to aid in the first cut of turbomachinery design and rehabilitation. The method calculates the fluid flow in a hydraulic turbomachine, effectively simulating the hydraulic performance of a turbine before it is manufactured. Sulzer Escher Wyss has been successfully using the computer method of numerical flow simulation to test designers' ideas. In recent years, great progress has been made in the area of numerical simulation of physical phenomena.

A variety of techniques exist to perform this preliminary design testing. When a designer's ideas for the design or rehabilitation of a hydraulic turbine are tested before the actual machine is manufactured, operating characteristics can be improved.
