Numerical analysis of turbine blade cooling ducts

The cooling of turbine blades in turbines is enhanced by providing the cool ing ducts with ribs, so-called turbulators. It is investigated how these ri bs influence the heat transfer of the cooling air on the blades. A model is given to study this problem such that it lends itself to a numerical appro ach. A detailed discussion is given of the problem involved. It is shown ho w the ideas are implemented in a numerical code. The results of the simulat ions are assessed showing a practical way to test the quality of these cool ing ducts. (C) 2000 Elsevier Science Ltd. All rights reserved.