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International Journal of Rotating Machinery
Volume 10, Issue 1, Pages 65-73

Improvement of the Turbine Main Stop Valves with Flow Simulation in Erosion by Solid Particle Impact CFD

1Instituto de Investigaciones Eléctricas, Gerencia de Turbomaquinaria, Cuernavaca, Morelos, Mexico
2División de Sistemas Mecánicos, Instituto de Investigaciones Electricas, Apartado Postal 475, Centro Cuernavaca 62000, Mor., Mexico

Copyright © 2004 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The flow field in a steam turbine main stop valve bypass valve (MSVBV) has been investigated by means of CFD simulations. Because the entire flow to the turbine during start ups is carried by the MSVBV it is subject to serious solid particle erosion problems and requires frequent replacement to avoid the catastrophic damage which can occurred when the MSVBV skirt eroded through causing large pieces of metal to be carried directly into the turbine. For some of the most important geometric parameters of the MSVBV, design recommendation have been made.