A Finite Volume Method for the Conjugate Heat Transfer in Film Cooling Devices

The present work concerns the activity performed to upgrade an in house finite volume CFD solver for computing heat transfer in gas turbine cooling devices. The “conjugate simulation” of fluid heat transfer and metal heat conduction has been considered. To this aim the original code has been coupled to a new one solving the Fourier equation in the solid domain. This modification allows the “conjugate heat transfer” investigation in the fluid and solid domains at the same time. The approach has been validated through two different test-cases. The first one is a two dimensional laminar flow over a flat plate, the second one is a film-cooled plate. A more complex application is also shown as an example of complete film cooled stage. In this example the complete cooling system of the nozzle has been modeled, including the two plenums and six rows of cooling channels as well.