Peculiarities of the Calculations of the Gas Turbine Cooling Systems

Gas turbine cooling systems have the branched networks of various channels whose hydraulic and heat exchange capabilities define air flow required for parts and, thus, directly influence efficiency gas turbines. Cooling system elements are, in particular, throttles, diaphragms, seals, openings that act as regulating or to maintain pressure system. As a rule, this type significant drop, therefore during calculations it is necessary very carefully consider change density along channel. Therefore, we present paper method developed by authors determining resistance openings, data obtained perfectly agree with experimental data. It shown how take into account effect compressibility on coefficient allows use numerous dependencies coefficients incompressible liquids. A calculating resistances defragmenting their total separate components has been proposed. generalized dependence was established discharge discs mounting gaps between shanks blades discs, taking transverse flows.