Influence of balancing holes and disc sealing in turbine stages on thermodynamic efficiency and rotor forces
R&D Specialist Sciences, Thermodynamics Department, Doosan Škoda Power s.r.o., Tylova 1/57, 301 28 Plzeň, Czech Republic
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Published online: 28 March 2016
This paper deals with CFD analysis of a particular turbine impulse stage including the surrounding parts such as diaphragm seals, shroud seals and a disc axial gap, where balancing holes and a disc sealing is designed. The aim is to investigate effects on efficiency and axial forces by evaluation of a pressure distribution on the rotor disc and respective mass flow balances. As a result of this, the possible methodology of design optimization could be found. The other part of the project is to find the way for a more exact preliminary computation which is essential for increasing efficiency and the reduction of the axial forces.
© Owned by the authors, published by EDP Sciences, 2016
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