Researh of influence of sealing on the efficiency of low flow rate LPI turbine stages

In this article on the basis of the calculations performed in the software package ANSYS CFX influence of constructional parts, designed to reduce leakage of the working fluid, on the efficiency of low flow rate LPI turbine stages were considered. Mechanisms of leakage of the working fluid were analyzed and it’s quantification were given. Effect of the typical constructional parts, such as turbine tip shroud and balance holes, on the leakage was considered. Recommendations for improving the design of seals in the wheel spaces of low flow rate turbine stages were formulated.