A numerical model of cooling air flow and heat transfer in a pin-finned convergent passage of gas turbine guiding vane was set up

which employed a turbulent k-ε model

a 3D Body Fitted Coordinates (BFC)

the SIMPLEST Algorithm and the whole field solving method of convection-conduction conjugate heat transfer problem

taking the interlinks among the flow field

pressure field

the temperature field

the property variation and the effects of compressibility and 3D heat conduction inside a guiding vane shell into consideration.The computation results are in a good agreement with experimental data.